In: Computers and Technology

Submitted By Doyal05
Words 47755
Pages 192
Chapter 1
Structure and Functions of a Computer
"Hardware: the parts of a computer that can be kicked." ~ Jeff Pesis

After completing this chapter, you will be able to:
1. Explain the importance of computer literacy. 2. Define the term computer. 3. Identify the components of a computer. 4. Compare the uses of various types of: input devices, output devices, and storage devices. 5. Describe categories of computers and their uses.

Structure and Functions of a Computer


1.0 Introduction
A computer is an electronic machine designed for the storage and processing of data. The machinery is called hardware, and this highly sophisticated equipment needs equally sophisticated programs (called software) to become a working computer system. Modern society has come to depend very heavily on the use of computer systems. Banks, businesses, government departments, industries, shops, people at home and school all rely on computer to play a vital role in their daily activities. These activities are centered on information. In business, the computer system has been used a lot and replaced filing cabinets as means of storing information, and clerical workers as a means of processing it. By storing and processing information on a computer system, these businesses can function more quickly and efficiently, because information can be found and collated much faster. Discovery Learning: A computer was also called a data processor. Why?

1.1 Major Parts and Functions
A Computer is an electronic device that accepts input data, processes data, stores data and produces output into useful information. Data is a collection of raw unprocessed facts, figures and symbols. Computers process data to create information. Information is data that is organized, meaningful, and useful. Whereas a system is a set of interrelated parts that performs different functions to achieve the same...