According to the number of keys of the keyboard, it can be divided into 86-key keyboard, 10 1 key keyboard, 104 key keyboard and Win98 keyboard.
86-key keyboard: an early keyboard with 86 keys;
10 1 key keyboard:1kloc-0/key: several common keys and numeric keys are separated and combined to form the third keyboard area-numeric keypad area, so there is a 10 1 key;
104 keyboard: after the introduction of Win95, three function keys were added, which is the most popular keyboard at present. ;
Win98 keyboard: This is a new keyboard introduced by some manufacturers after the launch of Win98 operating system. There are five more keys than Win95 keyboard.
The computer keyboard evolved from the English typewriter keyboard. When it first appeared on the computer, it appeared as a component called "teletypewriter". It is a channel for inputting control information of text information.
1868, Christopher latham Shoals, an American compositor, obtained the model patent and operation right of the typewriter. A few years later, he designed a general keyboard layout scheme, namely "QWERTY" keyboard. The basic principle of this keyboard is to drive a long rod through the keys, and there is a hammer on the long rod. The hammer hits the paper through the ribbon, thus leaving a dark letter print, like stamping on the paper.
At the beginning, the keys of the keyboard were installed in alphabetical order, that is, the alphabetical order in the upper left corner of the keyboard was "ABCDEF". However, he soon found that when the typist typed a little faster, the long rod of two adjacent letters and the hammer might get stuck together, resulting in a "stuck key" failure. It is said that in order to solve this problem, Shoals went to his brother-in-law, a mathematician and a school teacher for help. Mathematicians advised him to separate the most commonly used linked letters on the keyboard to avoid the occurrence of faults. Shoals readily adopted his brother-in-law's solution, and arranged the letters out of order, finally forming the "QWERTY" layout we see now. Shoals told the public that the alphabetical order on the typewriter keyboard is the most scientific and can speed up typing.
However, authorities in the history of the development of English typewriters now consider this to be "one of the biggest cheating activities in history". Wilfred A Beecher, director of the British Typewriter Museum and author of Typewriter Century, claimed that "this so-called' scientific arrangement' to reduce the movement distance of fingers is a complete lie." "Any random arrangement of letters will be more reasonable than the present arrangement."