A port expander is computer hardware that allows more than one device to connect to a single port on a computer. The VIC-20, for example, used a port expander to allow more than one cartridge to connect to the single ROM cartridge port.
A port expander is computer hardware that allows more than one device to connect to a single port on a computer. The VIC-20, for example, used a port expander to allow more than one cartridge to connect to the single ROM cartridge port.
Source: Wikipedia "Port expander" · CC BY-SA 4.0
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