2013年7月11日星期四

Keyboard

Keyboard 
Keyboard  is the set of typewriter-like keys that enables you to enter data into a computer. Computer keyboards are similar to electric-typewriter keyboards but contain additional keys. The keys on computer keyboards are often classified as follows:




  • alphanumeric keys -- letters and numbers
  • punctuation keys -- comma, period, semicolon, and so on.
  • special keys -- function keys, control keys, arrow keys, Caps Lock key, and so on.

  • Computer Keyboard Standards
    There are actually three different PC keyboards: the original PC keyboard, with 84 keys; the AT keyboard, also with 84 keys; and the enhanced keyboard, with 101 keys. The three differ somewhat in the placement of function keys, the Control key, the Return key, and the Shift keys.
    In addition to these keys, IBM keyboards contain the following keys: Page Up, Page Down, Home, End, Insert, Pause, Num Lock, Scroll Lock, Break, Caps Lock, Print Screen.

    Keyboard types
    Razer
    Dragon Age II Blackwidow Ultimate
    TRON Keyboard




    StarCraft series - Marauder
    Razer Effect 3 Blackwidow Ultimate




    Logitech

    Logitech Wireless Keyboard K270
    Logitech Wireless Keyboard K350
    Logitech Classic Keyboard K100
    Logitech Ultra-Flat Keyboard






    没有评论:

    发表评论