Introduction to Basic Computer Concepts

Essentially, a computer is a programmable machine. It allows information, or data, to be stored quickly and easily. Computers and peripherals, such as printers, can be networked together so information can be shared and exchanged between them.

Types of Computer

Computers are typically classified by their size and processing power, although there is considerable overlap between the different types. Laptop or notebook computers are lightweight and portable, whereas desktop computers tend to be larger, more permanent fixtures. Servers, mainframes or workstations are larger computers typically used in commercial settings.

Hardware

Computer hardware is the term used to describe the mechanical, magnetic and electronic components of a computer system. The central processing unit (CPU) is the "brains" of a computer; it interprets the instructions sent to programs. Other hardware components include keyboard, screen and disk drives.

Software

Computer software is the term used to describe the programs that run on, and direct the operation of, a computer system. Software is written in a programming language by a programmer and typical applications include word processing, spreadsheets and databases.

References

• IMRT: Understanding Computers
• The Computer Technology Documentation Project: Software and Hardware