The Hewlett-Packard 9100A was the world's first
personal computer, first appearing in
1968.
HP called it a desktop calculator because, as
Bill Hewlett said, "If we had called it a computer, it would have been rejected by our customers' computer gurus because it didn't look like an
IBM. We therefore decided to call it a calculator, and all such nonsense disappeared." An engineering triumph at the time, the
logic circuit was produced without any
integrated circuits, the assembly of the
CPU having been entirely executed in
discrete components. With
CRT readout,
magnetic card storage, and printer, the price was around $5000.
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