A microprocessor is a computer processor that incorporates the functions of a central processing unit on a single integrated circuit, or sometimes up to 8 integrated circuits. There's no reason behind any individual to have a pc in his home. Ken Olsen, 1977 - The World's First Microprocessor - The Intel 4004 - In 1970 also 71, reacting to a petition for 12 custom chips for a brand-new high end calculator, and with unbelievable overkill, a young startup firm named Intel constructed the world's first chip general purpose microprocessor. Then it purchased back the rights for $60, 000. The Intel 4004 contained 2300 transistors and ran at a clock rate of 740 kHz. The 4004 addressed to 640 bytes of data memory and 4096 bytes of program memory, as different entities.
This made it equal to the 1946 ENIAC in those size of a fingernail, in a time when several circuit boards were taken by the majority of computers CPUs. The 4004 was. While Federico Faggin was the programmer of the processor, ted Hoff had the idea of building a single purpose processor rather than 12 custom chips. Faggin went on to launch his own chip company, Zilog, which collaborated for bulk of the 70s with Intel, leading deny his role to Intel trying to disown him. UNIX and The C Programming Language - Meanwhile, at the other end of the industry, a talented programmer at AT&T Bell Laboratories named Dennis Ritchie created the C programming language, based on the earlier B language of his Bell Labs colleague Ken Thompson, which itself was based on BCPL, a language originally designed for writing compilers for other languages.
C has been far from being those first high level language, but its low level approach also use of memory addresses as pointers made it those first language which could completely replace machine specific assembly language programming, even to get those interiors of an OS. C was therefore those first systems programming language no longer has been an OS tied to a certain piece of hardware. Ritchie along with Other developers at Bell Labs had been involved with writing Multics the ultimate OS coupled with co-workers at Massachusetts Institute of Technology and General Electric. UNIX took those multi user also multitasking ideas from Multics, but utilized a radically simplified, but much more flexible process model fork() also exec() also added a revolutionary new filesystem designed by Thompson. Other Multics concepts such as I\/O redirection were also simplified and generalized, leading to new concepts like pipes of data between commands, which in turn encouraged a highly modular shell environment with many small, simple utilities used in flexible combinations.