Lunes, Setyembre 10, 2012

What is a computer?

A computer is a multi-purpose electronic device that can perform many tasks, solve many problems, and store and retrieve data. Generally, a computer has many parts that need to assemble to make it up.

Components of a computer

A computer is divided into three components: computer hardware, software and peopleware.

Computer Hardware

A computer hardware is a physical part or component that make up a computer. It is categorized into three groups of devices and these are input, output and storage devices.

Software

A software is a collection of programs and data that provides instructions that tells a computer what to do. It is categorized into the following: system, application and programmable software  

Peopleware

Peopleware is a term that refers to a person who is responsible for using a computer, such as programmer, encoder, video editor, doctor, game player, etc.
 
Types of software

System software

System software is a software used to function and operate computer hardware and run some application software. 

Application software

Application software is a set of programs that performs specific tasks for the user, like Microsoft Word where you can encode documents.

Programmable software

Programmable software is a software created by a programmer to perform some specific tasks.

Parts of hardware entities

Input device 
  
Keyboard   
 










Mouse

Output device

 
Printer









Monitor












Speaker

Storage device

 
Hard disk drive
Floppy disk
  Removable disk/USB Flash drive

CD/DVD ROM disc
 Random Access Memory card
   

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