Time to simply pack more transistors and create a

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Unformatted text preview: ore transistors and create a working, more powerful computer, a way forward had to be found. The Development of the Microprocessor The way forward was found by Ted Hoff. Hoff designed the world’s first microprocessor, the 4004. The fours in 4004, indicated that the device had a 4-bit data path. The 4004 microprocessor was a four-chip system consisting of 256-byte ROM, a 32-bit RAM, 4-bit data path, and 10-bit shift register. It used 2,300 transistors to execute 60,000 operations per second, a top speed at the time [3]. The development of the first microprocessor caught the world off guard. Even Biscom, the company that had commissioned Hoff, did not understand the potential of the 4004. So they requested him to design the twelvethe chip set they hard originally wanted him to design [3]. chip In 1972, Intel, designed and introduced the 8008, an 8-bit microprocessor based on the 4004. The 8008 was historic in its own right in that it was the first microprocessor to use a compiler, a system program that interprets user inputs into machine code and machine code to system outputs understandable by the user. The 8008 supported the compiler called PL/M. Both the 4004 and the 8008 were specific application microprocessors. The truly general purpose microprocessor come out in 1974. It was the 8080, an 8-bit device with 4,500 transistors and packing an astonishing 200,000 operations per second. From 1974, the development of microprocessors exploded as companies like Motorala developed the 6800 in 1974, MOS Technology developed the 6502 in 1975, and Zilog developed the Z80 in 1976. Since then, many new companies have sprung up and the speed, density of transistors, and functionality of microprocessors has been on the rise. microprocessors . Historical Development of Computer Software and Personal Computer (PC) Computer Up until mid 1970s, the development of computing science was led by hardware. Up Computers were designed and software was designed to fit the hardware. The development of software to run the computers was in the hands of the companies that designed the hardware. The break from this routine came from two fronts: 1976 when the Apple I and Apple II microcomputer were unveiled, and 1981 when IBM joined the PC wars. These two developments started a new industry, the personal computing industry. Perhaps the PC industry may not have been the way it is today, were it not the development of the personal computer operating system (OS). The history of the development of the PC operating system, hence the birth of the PC industry, involved three players: IBM, Gary Kildall, the fellow who developed CP/M, the PC operating system many believe to be the first PC operating system, and Bill Gates, the develop of the Disk Operating System (DOS). The story, part legend, behind these players is the story of the beginning of the PC. The legend has it that when IBM developed the personal computer based on Intel’s 8088 microprocessor, in 1981, IBM needed an oper...
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This note was uploaded on 09/16/2013 for the course SCI 2234 taught by Professor Harding during the Fall '12 term at Columbia College.

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