3-8 Input NAND Gate

This document is a technical schematic for the M139, a 3-8 input NAND gate module manufactured by Digital Equipment Corporation. The schematic includes details on the three NAND gate ICs used (DEC 74H30), pin assignments for power (Pin 14: +5V) and ground (Pin 7: GND), as well as associated resistor and capacitor values for the circuit. It is intended for test and maintenance purposes.