KW11-P Programmable Real-Time Clock

This document is the user's manual for the KW11-P programmable real-time clock, a quad-height module designed for the PDP-11 computer system. It describes the module's theory of operation, including its functional units such as the Address Control, Interrupt Control, Count Set Buffer, Counter, and Control and Status Register. The manual details installation procedures, including backplane wiring, and provides programming rules and examples for the single-interrupt and repeat-interrupt modes. Appendices provide physical identification and component details for the module.