Versatile interfacing board that included:
- 12 unbuffered TTL digital I/O lines
- 8 unbuffered analog inputs (0-5v)
- 8-bit analog to digital converter
- LED status indicators
- Clock/calendar
- Buffered digital outputs (500 ma)
- TRIAC outputs, 400v 2 amp zero-crossing optically isolated (IOC 24-4 has 4 TRIAC outputs, IOC 24-12 has 12 TRIAC outputs)
- Regulated 5v power supply
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- Computers & Electronics (v21 n6) p. 105
- SYNC v3 n3 p. 66