The Radio Shack TRS-80 [MC-10] used RS232 serial bus as the serial port. The maximum cable length was determined by RS232, using a Mini-DIN 4 pin male connector. The MC-10 bus is OBSOLETE, as the TRS-80 was obsolete by 1984.
| Pin Number | Function |
| 1 | Carrier Detect |
| 2 | Receive Data |
| 3 | Ground |
| 4 | Transmit Data |
All other Apple interfaces are listed on the Apple Computer
Buses page. PC Buses [descriptions and pin outs].
The IBM PC uses a different pinout for the mouse interface.
Engineering Key words: MC-10, Computer Buses,
Connector Pin-Outs, Interface Standard, Specification, Spec,
Physical Interface, Description, Personal Computer Interface, Peripheral,
Printer Interface, Keyboard, Obsolete, Out-dated, Legacy Equipment, Gear.
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