Line I/O Control M750

This document contains the circuit schematic for the M750 Line I/O Control board, designed by Digital Equipment Corporation in 1968. It provides a detailed wiring diagram showing the interconnection of various integrated circuits (such as 7440N, 7402N, 74H00N, and 7474N), transistors (DEC3009B), diodes, capacitors, and resistors. The document also includes a complete parts list, a transistor and diode conversion chart, and basic component specifications for testing and maintenance purposes.