The monitor reads in the jobs one at a time from the input devices (typically a card reader or magnetic tape drive).The batch monitor accepts the commands for initializing, processing and terminating a batch.The batch monitor executes batches of job at definite interval of time.Such a portion of main memory is known as resident monitor. The batch processing operating system was called a monitor that resides in the main memory. The method of batch processing reduces the idle time of computer system because transition from one job to another does not require operator intervention.

Spooling is useful when device access data at different rates: In such a case buffer provides an area where data can rest until a slow device is ready to receive that data. Spooling refers to putting jobs in a buffer (an area in a memory or disk) Such a data can be output to printer and other devices.Spooling is a short form of Simultaneous Peripheral Operations On Line. In such a batch processing system, the various jobs of the users are collected in a queue. In this way many different jobs are processed, one after the other without any interaction from the users during program execution.Finally, the operator retrieves the output of these jobs and return them to the concerned users.When a batch of programs have been collected, the operator loads this batch of programs into the computer at one time where they are executed one after the other. The users submit their job to a computer operator.This job was usually in form of punched cards. The users prepare their job that consisted of the program, data and some control information.The users did not interact directly with computer system.The job processing was not interactive as it is today. The computers in the past were very large in size and their I/O devices were very different from those that are used today.Batch processing is one of the oldest method of running the programs.What is Simple Batch Processing Operating System?

Processing operating system prompt