Basic keyboard The basic keyboard is a flat rectangular pad with a keyboard cable that connects to the back of the computer hardware or CPU. It usually follows the ISO/IEC 9995 international standard, which requires particular sections such as the alphanumeric, numeric, and functional sections. It is usually designed to work with specific operating systems. Illuminated keyboard An illuminated keyboard has a special backlight that illuminates the keys from underneath. It allows users to type in darkrooms or in poorly lit areas.
Ergonomic keyboard An ergonomic keyboard is designed to provide comfort and prevent hand strain when typing. It follows the natural contours of the fingers, palms, and hands to keep them in a relaxed, natural position. It is ideal for people who work long hours in front of a computer.
It usually comes with a palm and thumb rest.
Industrial keyboard An industrial keyboard is made from heavy-duty materials to withstand harsh environments. Some models are designed to fit into 19-inch rack-mount cabinets. It is usually heavier and bulkier than standard keyboards.
Left-handed keyboard A left-handed keyboard has an inverted layout to make it accessible for left-handed users.
Mini keyboard A mini keyboard is a portable keyboard used for PDAs and tablet PCs. It is light, compact, and sometimes foldable.
Wireless keyboard A wireless keyboard connects to the computer using infrared or Bluetooth technology instead of cables. It is usually powered by batteries. It is prone to interference or eavesdropping using wireless devices on the same frequency band.
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