2.4 Batch System
Some computer systems only did one thing at a time. They had a list of the
computer system may be dedicated to a single program until its completion,
or they may be dynamically reassigned among a collection of active
programs in different stages of execution.
Batch operating system is one where programs and data are collected
together in a batch before processing starts. A job is predefined sequence of
commands, programs and data that are combined in to a single unit called
job.
Fig. 2.1 shows the memory layout for a simple batch system. Memory
management in batch system is very simple. Memory is usually divided into
two areas : Operating system and user program area.