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Intoduction to Computer and Information Technology

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Intoduction to Computer and Information Technology
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CHAPTER 1: INTODUCTION TO COMPUTER AND INFORMATION TECHNOLOGY

2 Computer and Information Literacy

Know how to use a computer is a basic skill Purpose : • To succeed in business • To function effectively in society

To fulfill the purpose we should be a computer literate and information literate

Computer literate

• Must be knowledgeable in how to use a computer

Information literate

• Must be knowledgeable in finding, analyzing and using information • The ability to gather information from multiple sources, select the relevant material and organize it into a form that will allow you to make a decision or take a specific action • Information – computer, other products, finance, travel, weather • Sources – magazine, publication, Internet • By the use of communication equipment and software, computers can connect with information sources around the world • Up-to-date information, fast, efficient, cost-effective

4 What is a computer?

• An electronic device • Operating under the control of instructions stored in its own memory unit • Can accept data (input) • Process data arithmetically and logically • Produce results (output) • Store the results for future use

Computer system – a collection of devices that function together to process data

2. What does a computer do?

Input • Data given to a computer during the input operation • Data – raw facts – numbers, words, images, sounds

Process • Manipulate data to create information • Information – data that has been processed into a meaningful and useful form • Information processing – production of information by processing data on a computer • Data – arithmetic and logical

Output • Information created is put into some form (e.g. printed report)

Storage • Store automatically • Magnetic – CD, tape,

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