X Diode Matrix 6613

Summary This document is a technical schematic from Digital Equipment Corporation (dated 1969) detailing a diode matrix board. The schematic displays a grid of D672 diodes arranged in rows and columns, identified by alphanumeric designators (X0 through X63). The circuit includes a thermistor (330) and various input/output connection points labeled with letter pairs. The document serves as a reference for the component layout and signal path configuration for the specified hardware module.