IBM Personal Computer (PC)
Model: 5150
Released: September 1981
Price: US $3000
CPU: Intel 8088, 4.77MHz
RAM: 16K, 640K max
Display: 80 X 24 text
Storage: optional 160KB 5.25-inch disk drives
Ports: cassette & keyboard only
internal expansion slots
OS: IBM PC-DOS Version 1.0
The IBM Personal Computer ("PC") was not as powerful as many of the other personal computers it was competing against at the time of its release. It has only 16K on-board RAM and uses an audio cassette to load and save data - the floppy drive was optional, and no hard drive was yet available.
Even so, it is very expandable, more so than most. Expansion slots on the motherboard allow easy installation of additional memory, as well as serial, parallel, video and other options.
# This wasn't IBM's first attempt at a personal, or micro-computer, although it is by far their most successful. In 1975, the model 5100 was an entirely self-contained, portable computer system - probably the first ever.
# Developed between 1979 and 1981, the Datamaster was an all-in-one desktop system for word processing.
These two earlier attempts were both very expensive and sold poorly.
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