Archive for the ‘Typing’ tag
Ergonomic keyboard: essential or not?
You may wonder why anyone would want to spend money buying an extra keyboard. It seems strange when new PCs generally come with what look like a perfectly decent keyboards.
The answer is that, in some circumstances, keyboards are health hazards. They can inflict pain and, in extreme cases, cause long-term physical damage.
But buying a new ergonomic keyboard isn't straightforward.
Keyboards can hurt you
Typing injuries were called RSI (repetitive strain injuries) but are now generally described as occupational overuse syndrome or OOS.
Some people believe the business is just a worker compensation rort, but there's plenty of evidence that keyboard OOS injuries are real. They affects thousands of Australians and New Zealanders every year.
In medical terms the pains might be tendonitis or tenosynovitis.
Both start mildly, with plenty of early warning signs. However, things can quickly turn nasty. In severe cases you could end up with Carpal Tunnel Syndrome (CTS), a squeezing of the median nerve as it runs into hand.
If you reach this point, you'll be unable to type.
Some poorly designed keyboards are particularly bad because they cause wrists to twist unnaturally. Of course posture, desk and seating height are important – possibly more important than keyboard design – it might pay to look at adjusting these before investing in an ergonomic keyboard.
Is your mouse worse?
Ergonomics experts warn PC mice can cause more problems than keyboards. If you do a lot of typing, it’s a good idea to learn keyboard short cuts to cut down on mouse use.
New computers usually come with a traditional 'straight' keyboard. Some manufacturers might describe these as ergonomic, but generally the term is for keyboards that better accommodate the human body.
One ergonomic improvement is to split the conventional keyboard down the middle and then angle the two halves outward. This is particularly helpful for people with broad shoulders as it enables them to hold their wrists at a more comfortable angle.
People with narrow shoulders usually find a straight keyboard is preferable. Most split keyboards come with a fixed angle, but some are adjustable and others can even be broken apart.
Another improvement is to have a raised area in front of the keys where you can rest the heels of the palms of your hands. Many laptops are like this – it's better than early designs where the keys started at the front of the case. It is possible to buy separate wrist rests; they come in a variety of designs including rubberised material and gel-filled rests.
Other physical designs include specially recessed keys and giving each key more or less travel – that is the distance that it moves up and down. Some people prefer more travel and audible 'click'; others are comfortable with silence and a softer touch.
A keyboard with the wrong kind of response will affect your productivity.
Spacing is important
Make sure that the size and spacing of keys is right for the size of your hands.
If you have small hands then smaller keys, bunched fairly closely together will be more comfortable. Some people like small keyboards because they use up less desk space – but it isn’t wise to work in cramped conditions.
Netbooks and laptops are a problem. It may pay to add an external keyboard to these computers when working at home.
Beyond QWERTY
There are keyboards that abandon the familiar QWERTY pattern altogether:
- The Dvorak pattern, which claims to be more efficient and therefore less painful.
- Chording keyboards allow you to use key combinations to create letters. Since your fingers stay on the same keys all the time there’s less chance of RSI.
The problem with both is that you’ll need to relearn your typing skills and you’ll experience difficulty if you ever work at another computer.
The trouble might not be the keyboard but its place on your desk. Generally it should be set slightly lower than the average desk height. Some workplaces use keyboard trays that sit slightly below the desk. The best ones are height adjustable. Most desk trays also allow you to adjust the slope of the keyboard – counter-intuitively experts recommend that if the keyboard slopes at all, it should slope backwards.
Other keyboard trays are detachable and can rest on your lap. A smart alternative is to use a cordless keyboard on your lap.
Watch out for wireless keyboards and mice
People typically have far more trouble with cordless devices than with the corded variety. That’s because they are battery-powered and get progressively harder to use as the batteries run down. If you’re experiencing problems, you can able to solve things quickly by moving back to a cord connected mouse and keyboard.
So, is an ergonomic keyboard essential or not?
Yes and no. The most essential thing is to find a comfortable, reliable keyboard. For years I used an ergonomic keyboard and mouse yet still suffered from occasional pains. That's because they were wireless devices. The pains went away for ever when I ditched the wireless keyboard and mouse for the flat, but cabled keyboard that came with my computer and invested $40 in a brand new ergonomic, yet cabled mouse. They're not as cool as the wireless alternatives, but they are reliable and comfortable. That's more important.
One last tip; if you’re in serious pain, try voice recognition software. It's far from perfect and you will need to do some keyboarding, yet it has reached the point where it works well enough to rest sore hands.
Ergonomic Web Sites
Typing injuries
Includes details on alternatives to conventional keyboards and why you may want to use them.
British RSI FAQ
A bare-bones backgrounder to keyboard injuries and RSI.
Carnegie Mellon University Computer Related Repetitive Strain Injuries
This useful information site tells you who is at risk, how to avoid keyboard injuries and what to do if they arise.
Healthy Computing
Wide-ranging site looking at a variety of computer health-related issues. There’s a good section on ergonomic issues for kids.
Should touch typing be like learning to drive?
The Stringer family of Melbourne's Sunburnt Suburbia say Australians should learn to touch type:
In Australia, more than 90% of adults have a driver's licence. To function effectively in the community you need one. As we attempt to become a knowledge-based economy, I think that the majority of Australians should also be able to touch type.
Maybe.
I learnt to touch type on a real typewriter as a trainee journalist long before I saw a computer keyboard.It's been useful for me.
Yet, I don't presume to tell people they should do the same.
There are alternatives.
If you don't like typing you can buy a tablet computer and use a pen. The first generation tablets were unimpressive, but I've seen recent models that do a great job of turning electronic script into text. Of course, pen computing is not for everyone. My handwriting isn't up to scratch – I suspect I'm not alone.
Another approach is voice recognition.
Like handwriting recognition, voice input has improved greatly in recent years and many people swear by it. The technology is particularly popular with disabled people and those who have developed repetitive strain injuries or similar ailments. Voice recognition companies claim 99 percent accuracy, in practice it takes some getting used to and patience.
As an aside, I first saw voice recognition demonstrated on a microcomputer (kids, ask your parents) in 1981. At the time a sales critter confided the technology was just two years away from mainstream adoption. It's been just two years away from the mainstream ever since.
The whole idea of touch typing being an essential future skill assumes tomorrow's computers will be like today's desktops and laptops.
I'm not suggesting these are about to disappear, but for many people iPhones, Blackberries and similar smart phones are replacing conventional computers. Perhaps texting, Blackberry thumb typing or even picking out words on the iPhone's virtual keyboard is the real key to being a future knowledge worker.
Touch typing is a valuable skill that will serve you for some time, but I'm not convinced that having more touch typists is the key to building a knowledge economy. Interesting idea though.