Computer Keyboards

Regardless of style and design, all computer keyboards have the same functions - to enter data into the computer, direct commands to be executed by the computer, and manage computer applications. You exert some sort of control over the computer through the keyboard.

A computer keyboard typically has 84 to 101 keys. Some of these keys are alphanumeric, which means that a key carries a letter and a number, while other keys allow input of punctuations.

Computer keyboards are classified into two: the standard keyboard and the alternative keyboards.

The Standard Computer Keyboard

The standard keyboard is designed asymmetrically where the letter keys are placed to the left while the number keys are placed to the left.

In western countries, the standard computer keyboard use the QWERTY layout which was designed for two finger typing and to prevent stuck keys. Some French countries use the AZERTY pattern of symbol keys.

Alternative Computer Keyboards

Apart from the standard computer keyboard, alternative computer keyboards are also available in the market. These alternative computer keyboards are designed to cater to the different needs and requirements of computer users.

Here are some of the alternative computer keyboards available in the market to date

• Modified Standard Layout Computer Keyboard
  This computer keyboard is almost identical to the standard keyboard only that the keys are angled to make typing easier and less taxing to the fingers and wrists.
• Ergonomic Computer Keyboard
  An ergonomic computer keyboard was designed to lessen the strain on the ulna and arm muscles. Some ergonomic keyboards allow the user to type at a different angle than the standard keyboard.
• Fixed-Angle Split Computer Keyboard
  This computer keyboard puts the arms in better position when typing and is ideal for individuals who have larger frames. This type of computer keyboard is more expensive than a conventional computer keyboard.