Binary to Octal Decoder S151

This document is a technical schematic for a Binary to Octal Decoder (Model S151) produced by the Digital Equipment Corporation. The circuit is designed to convert three binary inputs (representing $2^0, 2^1,$ and $2^2$) into one of eight output channels (labeled M through V).

Key technical specifications provided include:

• Components: The circuit utilizes transistors (DEC3639B/2N3639), diodes (D-662/D-664), and various resistors (1/4W, 5%).
• Operating Voltages: The board operates using a dual power configuration, specifically +10V and -15V.
• Purpose: The schematic is intended for test and maintenance purposes and remains the proprietary property of the manufacturer.
• Assembly Note: The document specifies the use of the R151 etch board for implementation.