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IBM Personal Computer

Specifications

MANUFACTURER  IBM
MODEL  Personal Computer
YEAR OF INTRODUCTION  1981
MAIN PROCESSOR  8088
BITS  16
CLOCK SPEED  4.77 MHz
FLOATING POINT UNIT  none
MEMORY MANAGEMENT UNIT  none
CO-PROCESSOR  none
RAM  128k
ROM  64k
OPERATING SYSTEM  CP/M-86
HONOURABLE MENTION  Mark Griffiths

Yes, the machine that started it all. Before the clones and Windows, there was this machine. It has Microsoft Basic in ROM which starts if there's no disk to boot from. Unique to this model is a tape port at the back, a feature that was removed from all subsequent models. I have also installed a 10M MFM hard drive which boots CP/M-86.

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