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[[File:Atari XE Games System-gen1.jpeg|thumb|right|Atari XEGS]]
The [[Atari 8-bit]] computer series, launched in 1979 as the Atari Home Computer System, included the Atari 400 and 800. Powered by the 8-bit MOS Technology [[6502 ]] CPU and custom coprocessors, these computers offered advanced graphics and sound for their time.
The Atari 800 was the high-end model, while the 400 was a budget-friendly option with a membrane keyboard and 8 KB of RAM. Both supported plug-and-play peripherals via the Atari SIO (Serial I/O) bus, a precursor to USB technology. The architecture was later used in the 1982 Atari 5200 console, though the systems were not software-compatible.
