Line Register and Control M751

This document is a technical schematic for a "Line Register and Control M751" unit produced by Digital Equipment Corporation. The diagram illustrates the logic circuitry, including various integrated circuits (ICs), resistors, and capacitors used to facilitate register operations and control signals. Key components listed include various DEC-branded integrated circuits (such as the 74H10N, 74H50N, 7401N, and 7474N series), 1.5K resistors, and 0.01μF capacitors. The schematic details the wiring connections for memory access (MEM signals) and bus address control (BAC signals), providing a comprehensive layout for maintenance and testing purposes.