Simple Batch Systems
ä Are the first operating systems (mid-50s)
ä The user submit a job (written on card or
tape) to a computer operator
ä The computer operator place a batch of
several jobs on a input device
ä A special program, the monitor, manages
the execution of each program in the batch
ä Resident monitor is in main memory and
available for execution
ä Monitor utilities are loaded when needed