Dual Programmable Real Time Clock

This manual provides detailed information on the KW11-K, a dual programmable real-time clock option designed for PDP-11 Unibus systems. It covers the theory of operation for Clock A and Clock B, including their respective counters, preset registers, and status registers. Additionally, the manual explains programming registers, vector addressing, and the use of Schmitt triggers for timing and synchronization, as well as hardware configuration details like jumpers, switches, and cabling.