4K x 12 MOS Memory

This document outlines the field installation and acceptance procedure for the 4K x 12 MOS memory (designated M8311-YA, YB, YC, YD, YE, YF, YH, YJ) in a PDP-8A system. It provides instructions on inspection, switch configuration for various memory sizes, installation into the Omnibus, and running the acceptance test. It includes technical diagrams, parts lists, and jumper configurations for proper system integration.