Real Time Clock (Line)

This document is a technical schematic and parts list for a "Real Time Clock (Line)" module produced by Digital Equipment Corporation.

• Page 1 provides a physical layout of the module, showing the placement of integrated circuits (E1 through E12), a pin housing connector, and a comprehensive parts list detailing components such as capacitors, diodes, resistors, and connectors.
• Page 2 contains the logic circuit diagram for the module, illustrating the interconnections between various logic gates (TTL chips like 7475, 74S04, 7400, etc.) that facilitate the real-time clock functionality.