I/O Bus Receiver

This document contains the official schematic diagram (W107-0-1) for a Digital Equipment Corporation (DEC) I/O bus receiver circuit. Dated March 1967, the schematic details the component arrangement, including transistors (DEC3639B/C) and diodes (D664), for testing and maintenance purposes. The document includes a transistor and diode conversion chart to map DEC components to standard EIA (2N) numbers.