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ZX Spectrum +2A/2B, +3/3B

5 bytes added, 13:09, 22 July 2015
Common hardware specifications
* Sound: AY-3-8912 3 channel, 8 octave Programmable Sound Generator and "beeper". Modulated onto video signal.
* Keyboard: 58 plastic keys with metal springs, operating a plastic membrane.
* I/O: Software controlled RS232 serial port. AUX Port. Tape In (ear) and Tape Out (mic). Two Sinclair SJS Joystick Ports. Parallel Printer Port. [[ZX Spectrum +3/2A/2B , +3/3B Edge Connector|Expansion I/O port]].
=====+3 specific hardware=====

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