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Gernelle invented the Micral N, which was much smaller than existing minicomputers. The January 1974 Users Manual called it "the first of a new generation of mini-computer whose principal feature is its very low cost," and said, "MICRAL's principal use is in process control. It does not aim to be an universal mini-computer." [12]
The history of the personal computer as a mass-market consumer electronic device began with the microcomputer revolution of the 1970s. A personal computer is one intended for interactive individual use, as opposed to a mainframe computer where the end user's requests are filtered through operating staff, or a time-sharing system in which one large processor is shared by many individuals.
Furthermore, Microsoft had kept the right to license MS-DOS, the most popular and de facto standard operating system [26] for the IBM PC, to other computer manufacturers. The only part which had to be duplicated was the BIOS, which Compaq did legally by using clean room design at a cost of $1 million. [27] [28] [29]
The Kenbak-1, released in early 1971, is considered by the Computer History Museum to be the world's first personal computer. It was designed and invented by John Blankenbaker of Kenbak Corporation in 1970, and was first sold in early 1971. Unlike a modern personal computer, the Kenbak-1 was built of small-scale integrated circuits, and did not ...
A more interactive form of computer use developed commercially by the middle 1960s. In a time-sharing system, multiple teleprinter and display terminals let many people share the use of one mainframe computer processor, with the operating system assigning time slices to each user's jobs. This was common in business applications and in science ...
However, the more able 8080 also became the original target CPU for an early de facto standard personal computer operating system called CP/M and was used for such demanding control tasks as cruise missiles, and many other uses. Released in 1974, the 8080 became one of the first really widespread microprocessors.
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Whirlwind, the first real-time computer was built at MIT by the team of Jay Forrester for the US Air Defense System, became operational. This computer is the first to allow interactive computing , allowing users to interact with it using a keyboard and a cathode-ray tube.