W101

This document is a proprietary electrical schematic for an IO Bus Driver, model WIOI-0-1, created by Digital Equipment Corporation and copyrighted in 1964.

The schematic depicts a multi-channel (six channels, Q1-Q6) logic circuit designed for an I/O bus, operating with +10V and -15V power supplies. Each channel primarily utilizes a DEC 2894-1B transistor, along with various diodes (D-662 / IN645, and D-664 / IN3606) and resistors (predominantly 68,000 ohms, 100 ohms, and 12,000 ohms). Resistors are specified as 1/4 Watt, 10% tolerance.

The document is furnished for test and maintenance purposes, with its circuitry being proprietary. It was drawn by A. Ouellette on August 31, 1964, and checked/engineered by N. Perryman and D. White on September 4, 1964. The current revision is B.