The improper use of these input devices could cause Repetitive Strain Injury (RSI) which includes conditions such as Carpal Tunnel Syndrome, Bursitis and Tendinitis.
Repetitive Strain Injury is as a result of repeating a motion that puts too much stress on a particular joint of your body. Some causes of computer-related injuries are the placement of these input devices.
The keyboard is an input device. Selecting a keyboard that is right for you is very important since the incorrect keyboard along with improper usage can cause discomfort and might even result in injury. Click here to look at some cheap computer keyboards.
The standard keyboard is the 104-key (QWERTY) keyboard. They now come with additional keys for the Internet and other functions. The majority of computers come with the traditional type of keyboard.
There is a large variety of keyboards with different shapes that you can choose from. The contoured keyboard with its recessed keys allows a more natural placement of your fingers on the keyboard. You should choose the type of keyboard that is most comfortable for you to use.
Try to get a keyboard that will fit the allowable space on your desktop.
Some keyboards make a 'clicking' sound during typing while others will have a softer touch and the keys are easier to depress. Choose the one that will allow you to type with efficiency and ease.
The keys on ergonomic keyboards are tilted at a 45-degree angle thus making it possible for you to type and still keep your wrists and forearms in a straight and natural position. I suggest that you invest in one so as to help to prevent wrist injury. Click here to view some.
This input device is the most frequently used 'pointing device' in PCs. You should ensure that it is within the natural reach of your arm - no stretching! Constantly reaching for it could result in injury to your shoulder and/or your arm.
Place input device on a flat surface that is just a little lower to the ground than your arm. If when you place your hand on it, your wrist is not higher than your fingers, you could end up with eventual injuries.
To complement gaming keyboards, gaming mice were also made. These mice had extra control buttons.
Uses a rubber ball that rolls in all directions. It has mechanical sensors that detect the direction in which the ball rolls and moves the pointer on the screen.
Uses a laser to detect movement. Say "goodbye" to cleaning a dirty mouse when you have an optical one! You will not need to be disassembling it continuously to clean it. Because they do not have any rollerball, they do not get clogged with dirt.
They have no moving parts and offer more precise and quick response than optomechanical and mechanical mice. Subsequently, they cost more.
Other advantages of this type of input device are:
Works on most surfaces.
It is a type of mechanical mouse that uses optical sensors to detect the motion of the rolling ball.
Mice connect to computers in different ways; namely:
The serial connection uses the RS-232C serial port.
PS/2 (Personal System 2 created by IBM) connection uses the PS/2 port.
USB Connection (Universal Serial Bus) uses the USB port.