Keyboards

Found in almost every computer, the keyboard is easily the most common input device used worldwide. There are several types of keyboards, each with its own design and function. Every keyboard, however, has its own alpha-numeric keys, toggle keys, and combination keys. Keyboards were originally used to type text and numbers in word processors and other text-based software. With the popularity of multimedia programs and other software, however, keyboards have added more functions which many include a number of key-strokes to produce a certain command.

Most computers work with traditional keyboards that are full-sized, rigid, and rectangular. They contain all the keys found in almost all keyboards, with the addition of other function keys. A good example of a traditional keyboard is the 101-key US traditional keyboard.

Figure 1: A typical example of a US keyboard

Photo taken from: http://www.notebookparts.com/images/datapage/5X486_dp.jpg

From the traditional keyboard, other variations have been produced to suit the needs of the user. One example of an evolved type is the flexible keyboard, a foldable input device that can be easily stored in small bags for increased mobility. Some come in hard plastic casings that can be folded like small brief cases, while others are encased in jelly-like material.

Figure 2: Hard plastic foldable keyboard

Photo taken from: http://shopping.franklincovey.com/shopping/images/products/lrg/29599_lrg.jpg

A more popular type of keyboard is the ergonomic keyboard which was produced to reduce wrist strain due to long hours of computer use. It is mostly used by gamers and multimedia artists.

Figure 3: Microsoft Ergonomic Keyboard

Photo taken from: http://www.ergoware.com/blog/wp-content/uploads/2008/08/microsoft-natural-ergonomic-keyboard-4000.gi

For users who prefer greater flexibility, they have the option to use a wireless keyboard that uses Infrared or Bluetooth technologies to connect to a computer's main unit. With this type of keyboard, a user does not have to be in close proximity to the monitor, CPU, and other parts of the computer.

Figure 4: ione wireless keyboard

Photo taken from: www.nanosoftware.org/Wireless%20Keyboard.jpg

With the introduction of smaller PDAs and computers, the mini PDA keyboards were produced to suit the needs of PDA users. For many new mini keyboards, wireless technologies have been integrated to facilitate easier connectivity. Some models are also foldable so they can be easily stored away.

Figure 5: Wireless PDA Keyboard

Photo from: http://www.inspector-gadget.co.uk/pics/pda_keyboard.jpg