SOFTWARE:
DEFINITION:
· “A piece of software is a computer program which has been written to carry out a particular task.”
· “A set of instruction to solve a particular problem”
Without software the hardware that is used to build a computer system would not be very useful. A software program contains the instructions that the computer must follow to carry out the task. Sometimes more than one program is required to complete a task. When this is the case the group of programs which together complete the task are known as a software package.
Software programs are originally produced by computer programmers who will write the instructions that form the program in a programming language.
Example pieces of software are:
· A word processor.
· A multimedia encyclopedia.
· A spreadsheet.
TYPES OF SOFTWARE
A software is usually classified as being two types
1. Systems software
2. Applications software.
SYSTEM SOFTWARE
Systems software controls the operation of a computer. Without systems software a computer would not function. The most important piece of systems software is the operating system. The operating system will perform vital tasks such as:
· Managing communications between software and hardware.
· Allocating computer memory to other software programs.
· Allocating CPU time to other software programs.
TYPES
· Operation systems
· Utility program
· Programming languages
· Device drivers
APPLICATION SOFTWARE
DEFINATION:
“Application software consists of programs designed to perform specific tasks for users”.Application software can be used as a productivity/business tool; to assist with graphics and multimedia projects; to support home, personal, and educational activities; and to facilitate communications.
TYPES:
Word Processor
Presentation Software
Database
Spreadsheet
Communication software
Desktop Publisher
Graphics Package
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