119826-B21 Redundant PSU 375W (SJ) Monitor — Enables one job at a time to execute in memory. As distributed, SJ resides in approximately 6 Kbytes of memory and requires minimal overhead. Should the user's requirements change, a properly written program that runs under the 119826-B21 Redundant PSU 375W monitor can be executed under the FB or XM monitor as a background program without modification, provided there is sufficient memory. Foreground/Background (119826-B21 Redundant PSU 375W) Monitor — Provides for the simultaneous execution of up to seven jobs in the foreground and a background job. The realtime function is accomplished in the foreground, which has priority on sys- tem resources. Functions that do not have critical 119826-B21 Redundant PSU 375W response time requirements, such as program development, are accomplished in the background, which op- erates whenever the jobs in the foreground cannot run. Within their priorities, both foreground and background jobs are 119826-B21 Redundant PSU 375W fully functional RT 11 programs with - access to system capabilities.