Chapter 5 CSC134: TYPES OF UTILITY PROGRAMS AND OPERATING SYSTEMS

Salam, this is the last chapter of CSC134 that I'm going to post.  First of all, I start of with definition of system software. 

 

System software consists of the programs that control or maintain the operations of the computer and its devices.  System software have two types.

1. Operating systems (OS)
2. Utility programs

1)  An operating system (OS) is a set of programs containing instructions that work together to coordinate all the activities among computer hardware resources. 

Fuction of OS are:

• start and shut down a computer
• provide a user interface
• manage programs
• manage memory
• control a network
• coordinate tasks

The process of starting or restarting a computer called booting.  There are two type of booting; cold boot and warm boot.

 

Types of operating systems:

• Stand-alone Operating Systems
• Server Operating Systems
• Embedded Operating Systems

2)  A utility program is a type of system software that allows a user to perform maintenance-type tasks.

-A file manager is a utility that performs functions related to file management.  A search utility is a program that attempts to locate a file on your computer based on critiria you specify.

-A disk cleanup utility searches for and removes unnecessary files.

-A disk defragmenter reorganizes the files and unused space on a computer's hard disk so that the operating syatem accesses data more quickly and programs run faster.

 

Hot! Take not! hehe

1. A virus describes a potentially damaging computer program that affects a computer negatively.
2. A worm copies itself repeatedly in memory or over a network.
3. A Trojan horse hides within or looks like a legitimate program.
4. An antivirus program protects a computer against virusses.