Understanding Computer Operating Systems!

PC Information That Is Vital To Your Business!

An operating system is kind of like the brain of a computer. You have a bunch of hardware like the CPU tower, the monitor, and the keyboard, but without a CPU, they cant do anything but power up and turn on. The operating system organizes files and lets the hardware know what it should do.

Table of Contents:

INTRODUCTION 3
WHAT IS AN OPERATING SYSTEM? 5
HISTORY OF OPERATING SYSTEMS 9
WHAT AN OPERATING SYSTEM DOES 13
Process Management 13
Memory Management 19
Disk and File Systems 23
Networking 24
Security 25
Internal Security 27
External Security 28
Graphical User Interfaces 29
Device Drivers 29
Application Interface 31
MICROSOFT WINDOWS 34
MAC OS 45
UNIX 51
LINUX 54
GNU 57
OTHER OPERATING SYSTEMS 59
INSTALLING AN OPERATING SYSTEM 62
DEFINING THE PROCESSES 66
Cache 66
Virtual Memory 74
System Resources 76
RAM 77
Computer Memory 84
CONCLUSION 91

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