Lecture Notes

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Chapter 1 –Introduction to Computers - Review

Why Is Computer Literacy Vital in Today's World?
Computer literacy, or digital literacy, involves having current knowledge and understanding of computers and their uses. The requirements that determine computer literacy change as technology changes. As computers become more a part of everyday life, many people believe that computer literacy is vital to success.

What Is a Computer, and What Is the Relationship between Data and Information? A computer is an electronic device, operating under the control of instructions stored in its own memory, that can accept data, process the data according to specified rules, produce results, and stores the results for future use. Data is a collection of unprocessed items, which can include text, numbers, images, audio, and video. Information conveys meaning and is useful to people.

List and Describe the Five Components of a Computer.
The electric, electronic, and mechanical components of a computer, or hardware, include input devices, output devices, a system unit, storage devices, and communications devices. An input device allows you to enter data or instructions into a computer. An output device conveys information to one or more people. The system unit is a case that contains the electronic components of a computer that are used to process data. A storage device records and/or retrieves items to and from storage media. A communications device enables a computer to send and receive data, instructions, and information to and from one or more computers.

What Are the Advantages and Disadvantages That Users Experience When Working with Computers? A user is anyone who communicates with a computer or utilizes the information it generates. Computers have the advantages of speed, reliability, consistency, storage, and communications. They perform operations at incredibly fast speeds, are dependable and reliable, consistently generate error-free results, can store enormous...
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