M Suresh Babu is currently a fourth year undergraduate student in the Department of Computer Science and Engineering, Narayana Engineering College, Nellore, Andhra Pradesh. He would like to work in operating systems, computer networks and also in Internet security concepts.

In this article we examine the objectives and functions of operating system, and then we trace the evolution of operating systems from the first manual system to the current multiprogrammed and time-shared systems.

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Address for Correspondence
M Suresh Babu
C/o N Sudhakar Reddy D.
No. 16-3-1141F Pinaki Nagar
Haranathapuram IV line
Nellore 524003 AP India.
Email: suresh_0529@rediffmail.com