Clock Register M217

Summary This document is a technical schematic for a Digital Equipment Corporation Clock Register (model M217). The circuit utilizes a series of integrated circuits—specifically DEC7474N (D-type flip-flops), DEC7400N (NAND gates), and DEC7401N (NAND gates with open collectors)—to manage clock and buffer signals. The schematic illustrates the logic pathways for various inputs and outputs, including "Clock Load," "Clock Clear," and "Buffer to AC" functions, alongside voltage requirements and component specifications (standard 0.01µF capacitors and pin-out configurations).