At the time, the Altair 8800 was designed to just show results in a
series of 16 LED lights and had 16 switches to enter data. That Altair
qualified as a computer in 1974/1975, even without an operating system
or programming language available. Users had the opportunity to purchase
external terminals (or build their own) to operate like rudimentary
monitors for the products, or even use a telephone to connect directly
to a more powerful, time-sharing computer
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