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Commodore VIC-20
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== Input/Output and Expansion == The VIC-20 was equipped with several I/O ports: * '''Cartridge Port''' β for software and memory expansion cartridges. * '''User Port''' β for modems and user-designed peripherals. * '''Serial Port''' β for printers and disk drives. * '''Joystick Port''' β compatible with Atari-style joysticks. * '''Cassette Port''' β for the Datasette. * '''RF and Composite Video Outputs''' β for connection to TVs and monitors.
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