Simple Batch System Defination

What Is Simple Batch System???

Simple Batch System

Simple Batch System:

Early computers were run from console. The card readers and tape drivers were input devices. Line printers, tape drives and card punched were common output devices. The user did not interact directly with the computer system. The user prepared a job that consisted of program, data and some control information. He then submitted it to the computer operator in the form of punched card.

          The Operating system was simple. Its basic job was to transfer control automatically from one job to the next. The operating system was always resident in memory. The operator batched similar jobs together and then ran in the computer to speed up the processing.

          The CPU is often idle in this environment as speed of I/O devices id much slower than CPU. After sometime, the introduction of disk instead of card reader resulted in faster I/O devices. In disk technology, the operating system keeps all jobs on a disk instead of card reader. The resources are utilized and jobs are performed more efficiently with the help of job scheduling. Job scheduling is possible because all jobs are present on disk.

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