The development of computers

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The development of computers

THE FIRST HOME COMPUTER

In July of 1980, IBM representatives met for the first time with Microsoft's Bill Gates to talk about writing an operating system or IBM's new home computer. IBM had already made one attempt to crack the market with their IBM 5100. The secret plans were referred to as "Project Chess". The code name for the new computer was "Acorn". Twelve engineers, led by William C. On August 12, 1981, IBM released their new computer, re-named the IBM PC. The "PC" stood for "personal computer" making IBM responsible for popularising the term "PC".

The first IBM PC ran on a 4.77 MHz Intel 8088 microprocessor. The PC came equipped with 16 kilobytes of memory, expandable to 256k. The PC came with one or two 160k floppy dick drives and an optional colour monitor. The Intel chip was chosen because IBM had already obtained the rights to manufacture the Intel chips. IBM had used the Intel 8086 for use in its DisplayWriter Intelligent Typewriter in exchange for giving Intel the rights to IBM's bubble memory technology.

Less than four months after IBM introduced the PC, Time Magazine named the computer "man of the year"

In 1980, IBM first approached Bill Gates and Microsoft, to discuss the state of home computers and Microsoft products. Gates gave IBM a few ideas on what would make a great home computer, among them to have Basic written into the ROM chip.

As for an operating system (OS) for the new computers, since Microsoft had never written an operating system before, Gates had suggested that IBM investigate an OS called CP/M (Control Program for Microcomputers), written by Gary Kildall of Digital Research. Kindall had his Ph.D. in computers and had written the most successful operating system of the time, selling over 600,000 copies of CP/M, his OS set the standard at that time.

IBM tried to contact Kildall for a meeting, executives met with Mrs. Kildall who refused to sign a non-disclosure agreement. IBM soon returned to Bill Gates and gave Microsoft the contract to write the new operating system, one that would eventually wipe Kildall's CP/M out of common use.

The "Microsoft Disk Operating System" or MS-DOS was based on QDOS, the "Quick and Dirty Operating System" written by Tim Paterson of Seattle Computer Products, for their prototype Intel 8086 based computer.

QDOS was based on Gary Kildall's CP/M, Paterson had bought a CP/M manual and used it as the basis to write his operating system in six weeks, QDOS was different enough from CP/M to be considered legal.

Microsoft bought the rights to QDOS for $50,000, keeping the IBM deal a secret from Seattle Computer Products.

Gates then talked IBM into letting Microsoft retain the rights, to market MS DOS separate from the IBM C project, Gates proceeded to make a fortune from the licensing of MS-DOS.

In 1981, Tim Paterson quit Seattle Computer Products and found employment at Microsoft

THE APPLE MACINTOSH

In December, 1983, Apple Computers ran its' famous "1984" Macintosh television commercial, on a small unknown station solely to make the commercial eligible for awards during 1984. The commercial cost 1.5 million and only ran once in 1983, but news and talk shows everywhere replayed it, making TV history. The next month, Apple Computer ran the same ad during the NFL Super Bowl, and millions of viewers saw their first glimpse of the Macintosh computer. Ridley Scott directed the commercial, and the Orwellian scene depicted the IBM world being destroyed by a new machine, the "Macintosh".
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Specifications

Macintosh 128K

CPU:

MC68000

CPU speed:

8 Mhz

FPU:

None

RAM:

28k Dram not expandable

ROM:

64k

Serial Ports:

2

Floppy:

3.5" 400k

Monitor:

9" 512x384 square pixels built-in B/W

Power:

60 Watts

Weight:

6.5 lbs.

Dimensions:

3.6" H x 9.6" W x 10.9" D

System Software:

Mac OS 1.0

Production:

January 1984 to October 1985

Cost:

$2,495

Note: The early Mac team members ...

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