X-Y Decoder Switch

This document is a technical schematic for a Digital Equipment Corporation (DEC) X-Y Decoder Switch circuit.

• Page 1 displays the component layout and physical footprint for the module, illustrating the placement of transistors, integrated circuits, capacitors, and resistors on the board.
• Page 2 provides the detailed electrical circuit diagram, showing the wiring connections, power distribution (+5V, -15V), and the interaction between the transistors (Q1–Q16), pulse transformers, diodes, and the integrated circuits (E1, E2, E3, E4, E5, E6).

The documentation also includes a parts list specifying the quantities and types of components used, such as transistors, diodes, capacitors, and resistors, along with the specified tolerances and electrical ratings required for the circuit to function.