The first machine that can really be called a computer was born in the United States in 1946. It was invented by Mao Qili and eckert, and its name is ENIAC. We call this kind of computer using vacuum tube the first generation computer. At this time, it is in the primary stage of computer development, even the programming language has not appeared, and there is no operating system.

The earliest system was born in Bell Laboratories in 1969. Ken Thompson and dennis ritchie are considered as the founders of UNIX. It's called UNIX

Keyboards have a very long history. As early as 17 14, people in Britain, America, France, Italy, Switzerland and other countries began to invent various types of typewriters. At that time, the earliest keyboards were all used on typewriters with immature technology. Until 1868, Christopher Latham Sholes, the American "father of typewriter", obtained the patent of typewriter model and the right to operate it. A few years later, he designed a practical form of modern typewriter and standardized the keyboard for the first time, which is now the "QWERTY" keyboard. The number of keys is almost the same as now, but the layout of letters is different.

The earliest mouse in the world was born in 1964 and was invented by American Doug Engelbarth. The earliest mouse was a small wooden box with only one button and two vertical rollers. Its working principle is that the roller drives the shaft to rotate, and the rheostat changes its resistance value to generate displacement signals. After computer processing, the cursor indicating the position on the screen can be moved. This is a wooden mouse model.