OBJECTIVES;- •Define system software and identify the two types of system software •Describe the functions of an operating system •Summarize the startup process on a personal computer •Summarize the features of several stand-alone operating systems •Briefly describe various server operating systems •Summarize the features of several embedded operating systems •Explain the purpose of several utility programs SYSTEM SOFTWARE -Programs that control or maintained the operation of a computer -Operating System - Utility program Operating System -Set of programs contain instruction to coordinate all the activities among computer hardware resources - Cold Boot: Turning on a computer that has been powered off completely -Warm Boot : Using the operating system to restart a computer -A boot drive is the drive from which your computer start -User Interface (UI) controls how you enter data and instructions and how information is displayed on screen Driver- A small program that tells the operating system how to communicate with a specific devices Type of Operating System:- -Stand-alone= DOS, MacOS -Server = Linux, Solaris - Embedded= Blackberry, iPhones OS Stand-alone Operating System - - A complete operating system that works on computers Server Operating System -Window Server 2008 -UNIX -LINUX -Solaris -NetWare Embedded Operating System - Resides on a ROM chip on a mobile devices or a consumer electronic devices -Embedded Linux, Blackberry, Symbian OS, iPhones OS Utility Programs
-A system software that allow users to maintain tasks -File manager is a utility that performs functions related to file management -Disk Defragmenter reorganizes the files and unused space on a computer 's hard disk so that the operating system accesses data more quickly and programs run faster -File compression utility shrinks the size of a file
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