Personal computing device history doesnt begin with IBM or Microsoft, although Microsoft was an early participant in the fledgling PC intentness.
The scratch line own(prenominal) computers, introduced in 1975, came as kits: The MITS Altair 8800, followed by the IMSAI 8080, an Altair clone. (Yes, cloning has been round that long!) Both used the Intel 8080 CPU. That was also the year Zilog created the Z-80 central processor and MOS Technology produced the 6502. Bill Gates and Paul Allen wrote a prefatory compiler for the Altair and formed Micro-soft.
In 1976, apples two Steves (Jobs and Wozniak) designed the Apple I, Apples only kit computer (you had to add a keyboard, military force supply, and enclosure to the assembled motherboard), around the 6502 processor. That was also the year the number one give voice processing program (Electric Pencil) and the first text adventure for microcomputers (Adventure) were released. Shugart introduced the 5.25 diskette drive; it would become a key component in the personal computing revolution.
The young industry exploded in 1977 as Apple introduced the Apple II, a color computer with expansion slots and floppy drive support; Radio drop behind rolled out the TRS-80; Commodore tapped into the pet rock craze with its fondle; Digital Research released CP/M, the 8-bit operating system that provided the template for MS-DOS; and the first ComputerLand franchise store (then Computer Shack) opened.
[pic]Software took center stage in 1978 when Dan Bricklin and Bob Frankston produced VisiCalc, the first electronic spreadsheet. This turned the personal computer into a useful business tool, not just a game machine or replacement for the electric typewriter.
WordMaster, short to become WordStar, was released and went on to dominate the word processing industry for years. Atari leveraged its video game experience and household
name to enter the personal computing market, and Epson shipped the TX-80, the first low-cost dot matrix printer.
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