IBM PC

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IBM PC 5150 [1]

IBM PC, (IBM Personal Computer, PC)
the progenitor of the PC compatible hardware platform. The original IBM version was model number 5150 with Intel 8088 running at 4.77 MHz and 16 or 64 Kibibyte of RAM, introduced on August 12, 1981. Pricing started at US$1,565 (equivalent to $4,080 in 2015) for a configuration with 16 K RAM, Color Graphics Adapter, and no disk drives. Most 5150s had one or two 5.25-inch floppy disk drives, either single-sided double-density (SSDD) or double-sided double-density (DSDD) [2] . The XT with 256 K RAM (expandable up to 640 K) and built-in hard drive followed in 1983, the AT with 80286 processor @ 8 MHz in 1984, and PS/2 in 1987, with the follow-on of the IBM PC series until 2000, along with 32-bit x86 compatibles. The term "IBM PC compatible" is not commonly used any more because most current mainstream desktop and laptop computers are based on the PC architecture with x86-64 processor and IBM no longer making PCs [3]

Project Chess

In July 1980, William C. Lowe assembles the members of "Project Chess", known as the "Dirty Dozen", the twelve engineers chosen to design and build a prototype personal computer, in Boca Raton, Florida. Don Estridge is project manager, Jack Sams heads the software effort [4] .

Timeline

Model Year Processor MHz RAM
IBM PC 5150 1981 8088 4.77 16 KiB - 256 KiB
IBM PC XT 1983 8088 4.77 128 KiB - 640 KiB
IBM PC AT 1984 80286 6-8 256 KiB ~ 16 MiB
IBM PS/2 1987 80286
386
486
16
20
25
512 KiB - 4 MiB
IBM PS/ValuePoint 1992 8086
386
486DX2-4
Pentium
8
25
66 - 100
60 - 100
640 KiB - 64 MiB
IBM PC 300 1994 486
Pentium
20-100
60-200
640 KiB - 192 MiB
IBM PC 360 1995 Pentium Pro 200 640 KiB - 128 MiB
IBM PC 365 1996 Pentium Pro 200 640 KiB - 512 MiB

Operating Systems

See also

Manuals

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External Links

PC

Compatibles

DOS

Graphics Adapter

Keyboard

References

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