The oldest rule of medicine is “first do no harm.” It’s much the same with computers. Today I’ll tiptoe close to that line.
Many times a computer is so fouled up, a person has to do one of three things: (1) Take it to the shop, (2) Dedicate weeks to trying one thing and then another or (3) take some chances with potent cures.
I think of these potent cures as desperate measures. I present them with no warranty, no promises. In fact, I suggest you only use them when no other option presents itself.
We’ll start with the least desperate of the bunch -- reformating the hard disk and reinstalling Windows. Some experts recommend this process fairly routinely, even for computers that are working. The theory is that you should start fresh once a year or so, removing any conflicts as well as hidden viruses or spyware. I don’t go that far. I only use this tactic when I can’t quite figure out what’s wrong with a computer but am fairly sure the problem is in the software, not the hardware.
If you do it, remember to back up all your data first. Also, make sure you have original disks for the programs you use.
The sequence at that point is: install the operating system; then the programs; then the backed up data.
My next tip is more dangerous. There are times when it will work, you’ll have to decide if you want to take the chance.
Remember floppy disks? Many people still send e-mail to me explaining that some important bit of information is stored on one. But the disk isn’t readable.
One desperate measure is to take the floppy disk apart. Carefully remove the inner circle of plastic coated with magnetic material. Then open a second identical brand new floppy and insert the inner material that you just removed. Put the disk back together. If it works — and it often will — immediately copy the material you need to the hard disk. Keep in mind that if you fail you’re ruined any chance of recovering the data.
Now lets turn to hard disks. When one goes bad, it can take much of your precious data with it — especially if you have not backed it up.
You can easily locate a disk recovery company by typing “disk recovery” into Google. I can’t recommend a specific service since I’ve never used one. But there’s a desperate measure that can help.
If the disk damage is not mechanical — and is software instead — there are programs that sometimes can recover your data. This is relatively safe and does not destroy the data if you fail. I’ll mention a couple of places to find these programs: http://www.runtime.org/data-recovery-software.htm and http://www.recoverdatasoftware.com/. I’m not recommending these programs, just offering examples. You can do a Web search using the terms: data recovery software.
In the worst case, the problem is mechanical. Software usually won’t help here. You’ll often recognize a mechanical problem by clicking or chattering sounds.
This is the point where only a commercial data recovery firm can help. There are some tricks floating around the Web that offer do-it-yourself remedies. I do not recommend them since, if they fail (and they usually do) you lose everything. I’ll tell you about a couple in case you decide to throw care to the wind with an otherwise useless hard disk.
The first one involves freezing the disk. Remove it, put it in a freezer bag and seal. Put that bag in a second bag, squeeze to remove the air, then put the whole shebang in the freezer for several hours.
When you take it out, let the the hard disk return to room temperature. Then reinstall it. If it works, immediately copy the information. Here’s why it might work: contraction from the cold, followed by expansion during the warm-up, can free balky parts.
Another trick that has worked for me is to remove the bad hard disk and tap it two or three times on a hard surface. I do not mean banging it like you’re driving a nail. Tap it.
I was serious in suggesting that you not try the last two tips unless the data on your disk is totally unimportant and you just feel like trying a parlor trick. Why mention them at all? I wanted you to know about them in case you stumble across a glowing review on the Web suggesting them.
Enough desperation for one day. I truly hope you never need to try any of these tips.
Thursday, May 22, 2008
I could tell the time of year even if I lived in a windowless cell. E-mail from my readers is the world’s best calendar.
This is when many of you begin to think of buying a laptop for a son or daughter heading to college. I’m several years removed from that necessity, but readers keep me up-to-date. In more than one case, I’ve changed my recommendations based on what you’ve told me.
As is usually true with smart technology purchases, the most important work is done long before the credit card slip is signed.
The starting point is the college Web site. You leave yourself open to costly mistakes if this stop is skipped. Many colleges have specific requirements for student computers. Ignoring these requirements could mean you’d end up buying two computers — the one you select and the type specified by the college.
Also, some manufacturers offer significant discounts for students at certain colleges (but comparison shop to make sure it is indeed a bargain).
In Atlanta, Georgia Tech has definite ideas about computers. Here’s a Web page that lists the requirements: http://tinyurl.com/56lra3.
You’ll see on the same Web page that Tech has purchasing agreements with Apple, Dell and Lenovo. Another link shows you programs that need to be installed on the computer.
Since Georgia Tech is known for engineering and technology, it’s not surprising its requirements are fairly specific. Other colleges may show more general requirements, or none at all. In that case, a call to the school may be prudent.
If you still have no guidance? Well, the specifications on the Georgia Tech site are an excellent start. Even if you end up paying a bit more to get the power called for, you probably will save money over time. That’s because your goal should be to buy a laptop computer that will survive four years of college without replacement.
To boost the odds of computer survival, here are four things to keep in mind.
One: All computers are compromises. For instance, extremely light computers often cost more and may not be rugged enough. Powerful laptop computers can be too bulky to comfortably carry around. The compromise I favor for college use is durability.
One example (though not a recommendation) is the Panasonic Toughbook, made for the school of hard knocks. You can read about it here: http://tinyurl.com/689xnq
Two: Consider insurance and an extended warranty. That goes against my usual recommendation. But parents have told me of broken screens, dropped computers and theft. Make your own decision, but research this option. Some credit cards offer warranty extensions if used for a purchase, so check on that as well.
Three: A good carrying case can add to survivability. I favor an aluminum hard-shell case. If your student considers that impractical, make sure any soft-side case you buy has plenty of padding.
Four: Keep in mind that laptop computers make a tempting target for thieves. There are dozens of devices ranging from cable lock systems that secure a computer in a dorm room, to tracking devices that make it easier to find a stolen computer. For ideas do a Google on “laptop computer anti-theft” or similar words.
Finally, make the student part of the search process. Your young scholar needs to buy into the notion of protecting the laptop. And it’s a good idea to cater to their biases when you make the purchase.
I’m sitting here at the keyboard smiling. I’ve been through this purchasing process twice. It’s a wonderful feeling to know I’ve finally graduated fr
This is when many of you begin to think of buying a laptop for a son or daughter heading to college. I’m several years removed from that necessity, but readers keep me up-to-date. In more than one case, I’ve changed my recommendations based on what you’ve told me.
As is usually true with smart technology purchases, the most important work is done long before the credit card slip is signed.
The starting point is the college Web site. You leave yourself open to costly mistakes if this stop is skipped. Many colleges have specific requirements for student computers. Ignoring these requirements could mean you’d end up buying two computers — the one you select and the type specified by the college.
Also, some manufacturers offer significant discounts for students at certain colleges (but comparison shop to make sure it is indeed a bargain).
In Atlanta, Georgia Tech has definite ideas about computers. Here’s a Web page that lists the requirements: http://tinyurl.com/56lra3.
You’ll see on the same Web page that Tech has purchasing agreements with Apple, Dell and Lenovo. Another link shows you programs that need to be installed on the computer.
Since Georgia Tech is known for engineering and technology, it’s not surprising its requirements are fairly specific. Other colleges may show more general requirements, or none at all. In that case, a call to the school may be prudent.
If you still have no guidance? Well, the specifications on the Georgia Tech site are an excellent start. Even if you end up paying a bit more to get the power called for, you probably will save money over time. That’s because your goal should be to buy a laptop computer that will survive four years of college without replacement.
To boost the odds of computer survival, here are four things to keep in mind.
One: All computers are compromises. For instance, extremely light computers often cost more and may not be rugged enough. Powerful laptop computers can be too bulky to comfortably carry around. The compromise I favor for college use is durability.
One example (though not a recommendation) is the Panasonic Toughbook, made for the school of hard knocks. You can read about it here: http://tinyurl.com/689xnq
Two: Consider insurance and an extended warranty. That goes against my usual recommendation. But parents have told me of broken screens, dropped computers and theft. Make your own decision, but research this option. Some credit cards offer warranty extensions if used for a purchase, so check on that as well.
Three: A good carrying case can add to survivability. I favor an aluminum hard-shell case. If your student considers that impractical, make sure any soft-side case you buy has plenty of padding.
Four: Keep in mind that laptop computers make a tempting target for thieves. There are dozens of devices ranging from cable lock systems that secure a computer in a dorm room, to tracking devices that make it easier to find a stolen computer. For ideas do a Google on “laptop computer anti-theft” or similar words.
Finally, make the student part of the search process. Your young scholar needs to buy into the notion of protecting the laptop. And it’s a good idea to cater to their biases when you make the purchase.
I’m sitting here at the keyboard smiling. I’ve been through this purchasing process twice. It’s a wonderful feeling to know I’ve finally graduated fr
Friday, May 9, 2008
Feline nature of PCs
Computers, I’m convinced, must be related to housecats. Just when you think everything is purring along nicely, a computer can stick its claws right into your heart.
One moment it’s a computer, the next it’s a big paperweight. That shocking instant — when you hit the power switch and nothing happens — triggers a fine cloud of panic that turns even the most rational person into a wild-eyed fixing machine.
Today, while we are both calm, let’s map out a game plan for that inevitable day. Stick this column in a desk drawer so it can help you calm down and avoid making things worse.
At the risk of sounding like a Zen master, first do nothing. Almost anything you do in the first moments is likely to be wrong. Calmly jot down any symptoms that occured in the days before the computer died, as well as what you were doing at the time. You may find a clue there.
Now that you’ve had time to let the panic settle, check the most obvious causes. And yes, that starts with checking to see that the power cord connections are sound. Then check to make sure the surge protector or UPS is turned on and plugged in.
Some surge protectors and power strips can automatically switch off if electricity to your home is interrupted. Plug a small lamp or other AC device into the power outlet you’re using to make sure a circuit breaker hasn’t popped.
Next look at the front panel of your computer. Are any lights on? If not, the power supply may have gone bad. It’s an easy replacement — most large computer stores offer them — but many will be leery of that repair. Those of you who are competent to do it probably know it and those who aren’t know it too (I hope) .
But what if the front panel lights are on but the machine won’t do anything? Lets turn it off and see what it can say for itself. Hit the power switch and restart.
Do you see an on-screen message when the computer restarts? For instance, if the hard disk has failed you’ll see a message. But that’s not the only way a computer can tell you its woes.
Most use beeping sounds to alert you to problems. The meaning of these codes vary according to the kind of motherboard installed in the computer. Your manual will tell you the type of motherboard installed, or you can use another computer to check the manufacturer’s Web site. Once you know the brand of motherboard you can use this site to deciper the beeps: http://www.computerhope.com/beep.htm
Of course, the computer may be mute: No on-screen messages, no beeps. If so, try disconnecting any unneeded accessories — printers, scanners, etc. — and turn the machine on again. At times, a malfunctioning device will cause the problem, and if not you can at least rule it out.
The next step is to open the case.
Some of you will be reluctant. That’s fine. There’s nothing wrong with packing up the computer and taking it to a repair shop at this point.
But if you proceed,take a look at the cables and connectors inside once you have the case open. Are they firmly seated? Now — using the manual or just your knowledge — locate the processor chip. Most often it will have a tiny fan connected for cooling. Is the fan turning? Most computers will shut down if they overheat — a good thing. It’s also a good idea to check the larger fan — usually at the rear of the computer — that cools the entire innards of the machine.
If there’s nothing obviously wrong and the fans work, then try removing and reseating accessory cards. Important: Shut down the power first.
OK. We’ve reached a fork in the road. This may be all you can do. But if you have spare accessory cards (like the video card, sound card, etc.) you can try removing the card that’s in your computer and replacing it with one that you know is in working condition.
If the problem still isn’t fixed, it’s time to call it a day — and to call for an appointment at a repair service.
Since you’re reading all this with a computer that’s working just fine, you can use these tips to prepare for the inevitable. Make sure you have the manual that came with your computer or download one and print it out. Also, it’s a good idea to accumulate spare parts. Often times the problems aren’t as dire as a computer that won’t start at all. Many times all you need is a replacement keyboard, video card, even a monitor or a mouse.
Next time your computer turns into a housecat, you’ll have a better chance of avoiding those painful claws.
One moment it’s a computer, the next it’s a big paperweight. That shocking instant — when you hit the power switch and nothing happens — triggers a fine cloud of panic that turns even the most rational person into a wild-eyed fixing machine.
Today, while we are both calm, let’s map out a game plan for that inevitable day. Stick this column in a desk drawer so it can help you calm down and avoid making things worse.
At the risk of sounding like a Zen master, first do nothing. Almost anything you do in the first moments is likely to be wrong. Calmly jot down any symptoms that occured in the days before the computer died, as well as what you were doing at the time. You may find a clue there.
Now that you’ve had time to let the panic settle, check the most obvious causes. And yes, that starts with checking to see that the power cord connections are sound. Then check to make sure the surge protector or UPS is turned on and plugged in.
Some surge protectors and power strips can automatically switch off if electricity to your home is interrupted. Plug a small lamp or other AC device into the power outlet you’re using to make sure a circuit breaker hasn’t popped.
Next look at the front panel of your computer. Are any lights on? If not, the power supply may have gone bad. It’s an easy replacement — most large computer stores offer them — but many will be leery of that repair. Those of you who are competent to do it probably know it and those who aren’t know it too (I hope) .
But what if the front panel lights are on but the machine won’t do anything? Lets turn it off and see what it can say for itself. Hit the power switch and restart.
Do you see an on-screen message when the computer restarts? For instance, if the hard disk has failed you’ll see a message. But that’s not the only way a computer can tell you its woes.
Most use beeping sounds to alert you to problems. The meaning of these codes vary according to the kind of motherboard installed in the computer. Your manual will tell you the type of motherboard installed, or you can use another computer to check the manufacturer’s Web site. Once you know the brand of motherboard you can use this site to deciper the beeps: http://www.computerhope.com/beep.htm
Of course, the computer may be mute: No on-screen messages, no beeps. If so, try disconnecting any unneeded accessories — printers, scanners, etc. — and turn the machine on again. At times, a malfunctioning device will cause the problem, and if not you can at least rule it out.
The next step is to open the case.
Some of you will be reluctant. That’s fine. There’s nothing wrong with packing up the computer and taking it to a repair shop at this point.
But if you proceed,take a look at the cables and connectors inside once you have the case open. Are they firmly seated? Now — using the manual or just your knowledge — locate the processor chip. Most often it will have a tiny fan connected for cooling. Is the fan turning? Most computers will shut down if they overheat — a good thing. It’s also a good idea to check the larger fan — usually at the rear of the computer — that cools the entire innards of the machine.
If there’s nothing obviously wrong and the fans work, then try removing and reseating accessory cards. Important: Shut down the power first.
OK. We’ve reached a fork in the road. This may be all you can do. But if you have spare accessory cards (like the video card, sound card, etc.) you can try removing the card that’s in your computer and replacing it with one that you know is in working condition.
If the problem still isn’t fixed, it’s time to call it a day — and to call for an appointment at a repair service.
Since you’re reading all this with a computer that’s working just fine, you can use these tips to prepare for the inevitable. Make sure you have the manual that came with your computer or download one and print it out. Also, it’s a good idea to accumulate spare parts. Often times the problems aren’t as dire as a computer that won’t start at all. Many times all you need is a replacement keyboard, video card, even a monitor or a mouse.
Next time your computer turns into a housecat, you’ll have a better chance of avoiding those painful claws.
Thursday, May 1, 2008
Your summer vacation
I’ve arranged a special vacation offer just for my readers. You’ll stay at no nightly cost, have food prepared to your taste and never bother with packing and unpacking.
It’s exactly what I plan for myself: A stay-at-home vacation with activities for the whole family. You’ll have plenty of time to read and take naps — important parts of any vacation.
And it will leave you with a little extra money in your pocket. I have plans for some of those dollars, but even so you’ll end up spending a fraction of what a conventional vacation would cost.
Think of me as counselor at your high-tech summer camp. There are a wide range of fun and educational activities offered. You can tailor what you do to all age groups.
I’ll direct you to some high-tech family projects you can order using the Web. Most of these sites offer dozens of projects. I’ll suggest a few types, and then you can find kits to suit your family.
Build-a-computer
One of the best ways to learn about computing is to build your own computer. Everyone in the family can help.
The first option is to build a powerful computer that can join the family arsenal. Simply pick up all the components from power supply to case at any good computer store. Most stores will help you find what you need and have books that explain the process.
You can also get Web help here: http://www.mysuperpc.com/
The project requires no soldering and is surprisingly easy. Depending on the components you select, you’ll spend about $800. The site above offers links to sites of various parts vendors. You can also shop locally or at other Web sites.
For a more sophisticated project where you literally work at the circuitboard level, try this Web site: http://tinyurl.com/5vwrnq
This isn’t for the faint-hearted. But for those of you who want to mount tiny components, it’s a great experience. You’ll get a book and all the components you need for $125.
You will not end up with a PC. Instead, this computer is mostly for learning. But it can be used as the brains for another project, including a robot. This is definitely a project for the hobbyist, but enough help is offered to make it suitable for motivated beginners.
Some kid stuff
Many families — especially those with young children who want to get involved — would be better off starting with much easier projects. Try this Web page for a wide range of scientific kits geared toward kids: http://www.hobbyengineering.com.
A child of 11 or 12 can easily navigate kits such as these.
One of my first boyhood projects was building a radio. I did it from scratch, but there are easier ways today. A Tennessee company called Ten-Tec (it also makes outstanding ham radio products) offers a $39 kit that lets you make a shortwave radio.
You get everything you need, along with instructions. This project is suitable for kids, but soldering is required so supervision is a good idea. Check it out at the top of this page: http://radio.tentec.com/kits
That radio won’t be fancy. But the same Web page offers increasingly difficult radio kits. You can wind up with a very nice homebuilt radio for about $200. Ten-Tec is known for its willingness to help when you’re stumped. That’s a nice plus.
Heat things up
If you are interested in some of the kits that involve soldering, why not get a kit that specifically teaches soldering? It just costs $12 and — for your efforts — you end up with a robot with blinking eyes. You can see it here: http://www.kitsusa.net/phpstore/index.php.
For those who want to build a real robot, here’s a good site: http://www.lynxmotion.com
I’ve geared a lot of this to kids, but tech-minded adults shouldn’t ignore the fun these electronics projects offer. I still get great joy in building something. There’s a real thrill in hitting the power switch on something you made yourself.
So now you have a starting point for what could be a really terrific family vacation. Even if you took on two of the more expensive projects, the cost will be a fraction of what you’d spend on a conventional vacation. And you you have the potential for educational fun that can bind a family tighter than the most elegant solder joint.
It’s exactly what I plan for myself: A stay-at-home vacation with activities for the whole family. You’ll have plenty of time to read and take naps — important parts of any vacation.
And it will leave you with a little extra money in your pocket. I have plans for some of those dollars, but even so you’ll end up spending a fraction of what a conventional vacation would cost.
Think of me as counselor at your high-tech summer camp. There are a wide range of fun and educational activities offered. You can tailor what you do to all age groups.
I’ll direct you to some high-tech family projects you can order using the Web. Most of these sites offer dozens of projects. I’ll suggest a few types, and then you can find kits to suit your family.
Build-a-computer
One of the best ways to learn about computing is to build your own computer. Everyone in the family can help.
The first option is to build a powerful computer that can join the family arsenal. Simply pick up all the components from power supply to case at any good computer store. Most stores will help you find what you need and have books that explain the process.
You can also get Web help here: http://www.mysuperpc.com/
The project requires no soldering and is surprisingly easy. Depending on the components you select, you’ll spend about $800. The site above offers links to sites of various parts vendors. You can also shop locally or at other Web sites.
For a more sophisticated project where you literally work at the circuitboard level, try this Web site: http://tinyurl.com/5vwrnq
This isn’t for the faint-hearted. But for those of you who want to mount tiny components, it’s a great experience. You’ll get a book and all the components you need for $125.
You will not end up with a PC. Instead, this computer is mostly for learning. But it can be used as the brains for another project, including a robot. This is definitely a project for the hobbyist, but enough help is offered to make it suitable for motivated beginners.
Some kid stuff
Many families — especially those with young children who want to get involved — would be better off starting with much easier projects. Try this Web page for a wide range of scientific kits geared toward kids: http://www.hobbyengineering.com.
A child of 11 or 12 can easily navigate kits such as these.
One of my first boyhood projects was building a radio. I did it from scratch, but there are easier ways today. A Tennessee company called Ten-Tec (it also makes outstanding ham radio products) offers a $39 kit that lets you make a shortwave radio.
You get everything you need, along with instructions. This project is suitable for kids, but soldering is required so supervision is a good idea. Check it out at the top of this page: http://radio.tentec.com/kits
That radio won’t be fancy. But the same Web page offers increasingly difficult radio kits. You can wind up with a very nice homebuilt radio for about $200. Ten-Tec is known for its willingness to help when you’re stumped. That’s a nice plus.
Heat things up
If you are interested in some of the kits that involve soldering, why not get a kit that specifically teaches soldering? It just costs $12 and — for your efforts — you end up with a robot with blinking eyes. You can see it here: http://www.kitsusa.net/phpstore/index.php.
For those who want to build a real robot, here’s a good site: http://www.lynxmotion.com
I’ve geared a lot of this to kids, but tech-minded adults shouldn’t ignore the fun these electronics projects offer. I still get great joy in building something. There’s a real thrill in hitting the power switch on something you made yourself.
So now you have a starting point for what could be a really terrific family vacation. Even if you took on two of the more expensive projects, the cost will be a fraction of what you’d spend on a conventional vacation. And you you have the potential for educational fun that can bind a family tighter than the most elegant solder joint.
Tuesday, April 22, 2008
Walk on the weird side
Today let’s take a walk -- a walk on the wild, scary side of computing.
We’ll leave hackers, ordinary computer viruses and scammers for another time. Let’s examine some real, but mostly hidden, dangers of computer use that can do real harm to your equipment, or even your body.
These threats don’t just come from the internet, but also from other gadgets that connect to your computer or allow you to use it. An example is the digital picture frame, one in a series of digital appliances that can come with an added and unwelcome feature at times — viruses, worms and password stealing programs implanted at the manufacturing source.
So far, the list of infected gadgets includes iPods, other music players and GPS devices. But it could widen to any gadget that contains computerized circuitry.
Most of these devices seem to be infected by accident at the factory — for instance, a worker might use a music player for his own use, connecting it to an infected computer. But there’s also evidence that some of these programs are added on purpose.
Not to pick on digital frames, but one giant U.S. retailer yanked them off its shelves when it discovered they contained a virus programmed to steal passwords and disable anti-virus software.
How does this sinister threat work? All these gadgets end up connected to your computer — either to transfer photos, music or navigation maps. When they are connected, the virus can migrate from the device to your machine. The safeguard? Keep your anti-virus software updated so that if a virus tries to sneak in the backdoor, the program catches it.
Another potential hidden danger is toner, the stuff used in a laser printer. Some researchers think the dust-like particles can be as dangerous as cigarette smoke. A study published in Environmental Science and Technology magazine suggested that changing toner cartridges on a laser printer sometimes subjected people to the high-tech version of black lung disease. The only difference is that, instead of coal dust harming the lungs of miners, the tiny particles of toner dust attacked the lungs of office workers.
There isn’t universal agreement on the harm. But it’s another example of an unexpected risk that may be lurking. If you’d like to read more, here’s a link to a 2007 article in Time magazine: http://tinyurl.com/3jb7qu
There are other risks to your body when you use a computer. One that is well-documented is carpal tunnel syndrome. Spending long hours at the keyboard can create serious and permanent problems when the median nerve, which runs from the forearm into the hand and can become squeezed at the wrist.
Other, lesser aliments, can also be caused by long hours at the keyboard too. So take a break.
Another, equally frightening medical problem, isn’t as well known. New Zealand researchers say extended sessions at a computer can cause fatal blood clots. The risk seems similar to what can happen if you spend a lot of time in a confined position — on long drives, or long airline flights. That adds to the risk of deep vein thrombosis. The veins become compressed and can form blood clots.
Between carpal tunnel system and fatal blood clots — well, that’s reason enough for anyone to take frequent breaks from the computer. Just get up and walk around.
In fact, I think I’ll do that right now. I never knew writing a column could be such a risky oc
We’ll leave hackers, ordinary computer viruses and scammers for another time. Let’s examine some real, but mostly hidden, dangers of computer use that can do real harm to your equipment, or even your body.
These threats don’t just come from the internet, but also from other gadgets that connect to your computer or allow you to use it. An example is the digital picture frame, one in a series of digital appliances that can come with an added and unwelcome feature at times — viruses, worms and password stealing programs implanted at the manufacturing source.
So far, the list of infected gadgets includes iPods, other music players and GPS devices. But it could widen to any gadget that contains computerized circuitry.
Most of these devices seem to be infected by accident at the factory — for instance, a worker might use a music player for his own use, connecting it to an infected computer. But there’s also evidence that some of these programs are added on purpose.
Not to pick on digital frames, but one giant U.S. retailer yanked them off its shelves when it discovered they contained a virus programmed to steal passwords and disable anti-virus software.
How does this sinister threat work? All these gadgets end up connected to your computer — either to transfer photos, music or navigation maps. When they are connected, the virus can migrate from the device to your machine. The safeguard? Keep your anti-virus software updated so that if a virus tries to sneak in the backdoor, the program catches it.
Another potential hidden danger is toner, the stuff used in a laser printer. Some researchers think the dust-like particles can be as dangerous as cigarette smoke. A study published in Environmental Science and Technology magazine suggested that changing toner cartridges on a laser printer sometimes subjected people to the high-tech version of black lung disease. The only difference is that, instead of coal dust harming the lungs of miners, the tiny particles of toner dust attacked the lungs of office workers.
There isn’t universal agreement on the harm. But it’s another example of an unexpected risk that may be lurking. If you’d like to read more, here’s a link to a 2007 article in Time magazine: http://tinyurl.com/3jb7qu
There are other risks to your body when you use a computer. One that is well-documented is carpal tunnel syndrome. Spending long hours at the keyboard can create serious and permanent problems when the median nerve, which runs from the forearm into the hand and can become squeezed at the wrist.
Other, lesser aliments, can also be caused by long hours at the keyboard too. So take a break.
Another, equally frightening medical problem, isn’t as well known. New Zealand researchers say extended sessions at a computer can cause fatal blood clots. The risk seems similar to what can happen if you spend a lot of time in a confined position — on long drives, or long airline flights. That adds to the risk of deep vein thrombosis. The veins become compressed and can form blood clots.
Between carpal tunnel system and fatal blood clots — well, that’s reason enough for anyone to take frequent breaks from the computer. Just get up and walk around.
In fact, I think I’ll do that right now. I never knew writing a column could be such a risky oc
Tuesday, April 15, 2008
A basement rescue
Last weekend I rescued an old friend. She was once popular and even trendy, but for the past couple of years she had been living alone in a basement. She looked good despite a growing collection of dust.
The rescue made both of us feel good, especially since I was able to put her to work.
You may have an old computer or two, stored away in a closet, basement or attic. I understand since I often do the same thing myself but — in truth — it’s sort of dumb. Most often it’s just a computer purgatory, a stop on the way to the final destination of the junk heap.
There are better ways and we’ll talk about that today.
For one thing, you can always give the computer away. Here in Atlanta, there’s an outfit called Computers for Youth. If you go to this Web page —- http://www.cfy.org/donate-computers.php — you’ll see the kind of computers it accepts. You can also read about the goals of the group. A quick search with Google with the search terms “donate computer” will help you find other groups no matter where you live.
If you decide to donate a computer, that’s a fine and generous thing. Over the years I’ve donated — either to groups or to individuals — at least six computers.
But in some cases, you may also be able to put one of those old computers to work right in your home. That’s what I did with my basement rescue. It now serves as a helper in my ham radio room, keeping track of contacts I’ve made and looking up locations of the other radio operators I visit with on the air. Taking a wild guess here most of you won’t be doing that.
But there are plenty of more ordinary uses for an aging and underpowered computer. I’ll give you some examples.
In my home, both my wife and I love to cook. Most of our recipes are scrawled on slips of paper. My chili recipe, for instance, is gradually disappearing under a coating of chili powder and cumin. Any working computer — no matter how old — would do a great job as a kitchen computer. Besides storing recipes it could also help when you need to pare down a recipe meant to serve four when you need to prepare it for six. Or, it could keep inventories of what you have on hand and then create shopping lists. With wireless access to the Internet, it can send those lists to a printer on your network, or roam the Net to hunt up new recipes.
The kitchen — with its steam, water and grease — isn’t the most hospitable location for a computer so you should locate it well out of the line of fire and also make sure that it’s connected to a outlet with ground fault protection (nowadays most bathroom and kitchen outlets have that protection, just be sure). Most office supply stores also sell plastic dust covers for computers and that’s an excellent idea for a kitchen computer.
If the computer eventually breaks down because of the environment, well you haven’t lost much — especially if you’re able to connect it to a network so that your recipes are stored away in another location.
Another great use for an aging computer is as a guest and kid machine. That way your own information is safe from prying eyes or careless use. If it breaks, well — again — you haven’t lost much.
My uncle, an electrical engineeer who spent part of his career working on operating systems, keeps one computer isolated from his home network. Information stored there is completely safe from hackers. And if a destructive virus or worm slips by his protection, the computer in isolation hums on with no problem. So it becomes a storage point for financial records and sensitive material. Properly backed up, it does a great job. In most cases, your old computer can do that just fine.
A more recent computer with a large hard disk could even sure as an online backup server. In many cases, that’s asking too much from an antique. It all depends on what you have on hand.
The great thing about all this is that — by letting an old machine share part of the computer load in your home — you are freeing up your best computers for the most important work like killing space aliens and playing online canasta.
The rescue made both of us feel good, especially since I was able to put her to work.
You may have an old computer or two, stored away in a closet, basement or attic. I understand since I often do the same thing myself but — in truth — it’s sort of dumb. Most often it’s just a computer purgatory, a stop on the way to the final destination of the junk heap.
There are better ways and we’ll talk about that today.
For one thing, you can always give the computer away. Here in Atlanta, there’s an outfit called Computers for Youth. If you go to this Web page —- http://www.cfy.org/donate-computers.php — you’ll see the kind of computers it accepts. You can also read about the goals of the group. A quick search with Google with the search terms “donate computer” will help you find other groups no matter where you live.
If you decide to donate a computer, that’s a fine and generous thing. Over the years I’ve donated — either to groups or to individuals — at least six computers.
But in some cases, you may also be able to put one of those old computers to work right in your home. That’s what I did with my basement rescue. It now serves as a helper in my ham radio room, keeping track of contacts I’ve made and looking up locations of the other radio operators I visit with on the air. Taking a wild guess here most of you won’t be doing that.
But there are plenty of more ordinary uses for an aging and underpowered computer. I’ll give you some examples.
In my home, both my wife and I love to cook. Most of our recipes are scrawled on slips of paper. My chili recipe, for instance, is gradually disappearing under a coating of chili powder and cumin. Any working computer — no matter how old — would do a great job as a kitchen computer. Besides storing recipes it could also help when you need to pare down a recipe meant to serve four when you need to prepare it for six. Or, it could keep inventories of what you have on hand and then create shopping lists. With wireless access to the Internet, it can send those lists to a printer on your network, or roam the Net to hunt up new recipes.
The kitchen — with its steam, water and grease — isn’t the most hospitable location for a computer so you should locate it well out of the line of fire and also make sure that it’s connected to a outlet with ground fault protection (nowadays most bathroom and kitchen outlets have that protection, just be sure). Most office supply stores also sell plastic dust covers for computers and that’s an excellent idea for a kitchen computer.
If the computer eventually breaks down because of the environment, well you haven’t lost much — especially if you’re able to connect it to a network so that your recipes are stored away in another location.
Another great use for an aging computer is as a guest and kid machine. That way your own information is safe from prying eyes or careless use. If it breaks, well — again — you haven’t lost much.
My uncle, an electrical engineeer who spent part of his career working on operating systems, keeps one computer isolated from his home network. Information stored there is completely safe from hackers. And if a destructive virus or worm slips by his protection, the computer in isolation hums on with no problem. So it becomes a storage point for financial records and sensitive material. Properly backed up, it does a great job. In most cases, your old computer can do that just fine.
A more recent computer with a large hard disk could even sure as an online backup server. In many cases, that’s asking too much from an antique. It all depends on what you have on hand.
The great thing about all this is that — by letting an old machine share part of the computer load in your home — you are freeing up your best computers for the most important work like killing space aliens and playing online canasta.
Monday, April 7, 2008
Some of you are coming into some money - $600 to $1,200 that you'll get from the IRS as part of what the newspapers are calling an economic stimulus package.
The idea is that many folks will spend that money. The added spurt of spending will trickle through the economy and make things OK again in theory.
I'm a patrotic guy. So today I'll help you spend your government windfall on high tech gadgets and gizmos.
The easy way out would be to buy a new computer. These days you can get a nice one for $1,200 or an completely adequate one for $600. But, unless your home computer no longer can do what needs doing, I'd advise against it. There are better ways to spend your money.
For instance, it would be smarter to spend part of that money on a black and white laser printer. Ink jet printers consume those expensive cartridges so fast that it's possible to spend an amount equivalent to the cost of the printer in just two or three months of
ink purchases.
Laser printers produce a black and white page at a fraction of the cost. Even with heavy use, cartridges often last months. At the cost of gas these days, eliminating extra trips to the office supply store can add to the savings.
C-net, a site I really trust, lists its top five black and white laser printers at this address: http://reviews.cnet.com/4370-3155_7-146-105.html?tag=lnav. Many of you will recoup the cost of the laser in just a few months. Once you own a laser, you can reserve your ink
jet printer for printing photographs and documents that need to be in color and use the laser for everything else.
You can spend as little as $100 to $200 on a very nice laser printer. That means we have money left. So lets keep shopping.
One of the most satisfactory purchases I've made in the past few years was for a wide-screen LCD monitor. The wide screen lets me put two documents side-by-side on the screen. And the text is easy to read on a large screen. Unlike old CRT monitors, these screens are lighter and - as a bonus - use just a fraction of the electricity.
I've had good luck with screens made by View Sonic, Dell, Sony and HP. Get a screen that's 20-inches or even larger to reap the full benefits. Even in the 21- to 22-inch range, you'll just pay $200 to $300. I promise, switching to a nice screen is like sending your eyeballs on vacation.
You'll notice that even if you followed my advice and purchased a $200 laser printer and a $300 monitor, there's still money left to spend.
So lets be a little crazy and buy something fun. Many of you have HDTV sets now. But not all of you have sound systems to match. Adding a five-speaker sound system makes an enormous difference, especially when watching movies.
Consider a system that uses wireless speakers. In many homes, it's hard to run speaker wires invisibly.
Many systems add a DVD player to the system. If you already own a DVD player, look for a system without one. Here's my thinking on that. The standard for DVD movies is shifting to high definition discs using the Blu-ray format. But I think prices for Blu-ray players will dive over the next year. So you can save money by avoiding that expense.
You'll pay anywhere from $200 to $600 or more for a system that includes speakers, a separate sub-woofer for movie theater-like bass, and a amplifier. Sony, Panasonic, JVC, Denon and Bose all make systems that sound great. Spend some time listening and then decide
how much you'd like to spend.
I'm going to run of space before you run out of money. And there's still so much shopping left to do. So have fun looking at GPS systems for your car, digital cameras, game consoles, fancy cellphones and the like.
And hold your head proud while you spend your money - you're a high tech patriot.
The idea is that many folks will spend that money. The added spurt of spending will trickle through the economy and make things OK again in theory.
I'm a patrotic guy. So today I'll help you spend your government windfall on high tech gadgets and gizmos.
The easy way out would be to buy a new computer. These days you can get a nice one for $1,200 or an completely adequate one for $600. But, unless your home computer no longer can do what needs doing, I'd advise against it. There are better ways to spend your money.
For instance, it would be smarter to spend part of that money on a black and white laser printer. Ink jet printers consume those expensive cartridges so fast that it's possible to spend an amount equivalent to the cost of the printer in just two or three months of
ink purchases.
Laser printers produce a black and white page at a fraction of the cost. Even with heavy use, cartridges often last months. At the cost of gas these days, eliminating extra trips to the office supply store can add to the savings.
C-net, a site I really trust, lists its top five black and white laser printers at this address: http://reviews.cnet.com/4370-3155_7-146-105.html?tag=lnav. Many of you will recoup the cost of the laser in just a few months. Once you own a laser, you can reserve your ink
jet printer for printing photographs and documents that need to be in color and use the laser for everything else.
You can spend as little as $100 to $200 on a very nice laser printer. That means we have money left. So lets keep shopping.
One of the most satisfactory purchases I've made in the past few years was for a wide-screen LCD monitor. The wide screen lets me put two documents side-by-side on the screen. And the text is easy to read on a large screen. Unlike old CRT monitors, these screens are lighter and - as a bonus - use just a fraction of the electricity.
I've had good luck with screens made by View Sonic, Dell, Sony and HP. Get a screen that's 20-inches or even larger to reap the full benefits. Even in the 21- to 22-inch range, you'll just pay $200 to $300. I promise, switching to a nice screen is like sending your eyeballs on vacation.
You'll notice that even if you followed my advice and purchased a $200 laser printer and a $300 monitor, there's still money left to spend.
So lets be a little crazy and buy something fun. Many of you have HDTV sets now. But not all of you have sound systems to match. Adding a five-speaker sound system makes an enormous difference, especially when watching movies.
Consider a system that uses wireless speakers. In many homes, it's hard to run speaker wires invisibly.
Many systems add a DVD player to the system. If you already own a DVD player, look for a system without one. Here's my thinking on that. The standard for DVD movies is shifting to high definition discs using the Blu-ray format. But I think prices for Blu-ray players will dive over the next year. So you can save money by avoiding that expense.
You'll pay anywhere from $200 to $600 or more for a system that includes speakers, a separate sub-woofer for movie theater-like bass, and a amplifier. Sony, Panasonic, JVC, Denon and Bose all make systems that sound great. Spend some time listening and then decide
how much you'd like to spend.
I'm going to run of space before you run out of money. And there's still so much shopping left to do. So have fun looking at GPS systems for your car, digital cameras, game consoles, fancy cellphones and the like.
And hold your head proud while you spend your money - you're a high tech patriot.
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