Information Technology

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Information Technology

Haag and Keen (1996) agreed that information technology is a set of tools that helps you work with information and perform task related to information processing. Included in this set are seven building blocks. All together, these building blocks are called an IT system (p.8). For an IT system we need: Input and output, software, communication devices, the processing engine, information, storage devices, and most important people (Haag & Keen, 1996).

According to Haag and Keen (1996) the definitions of the IT system is as follow,

1. Input and output devices that you use to enter information and commands and to receive (usually by hearing or seeing) the results of your requests. Input and output devices include a mouse, a keyboard, a screen, and a printer.

2. Software, or the set of instruction that are used to perform a particular task for you. Software includes word processing, budgeting, payroll, and communications.

3. Communication devices that connect IT systems and people all over the world. Communication devices include modem, satellites, and coaxial cable (similar to the cable you use to connect your TV to your VCR).

4. The processing engine contains two components: the central processing unit and the internal memory. The central processing unit executes the software to perform a particular task for you, while the internal memory is a temporary storage area for software and information.

5. Information you work with. Today, you can work with information in a variety of forms—text, sound, video, and even movement.

6. Storage devices that permanently store information and software. Storage devices include CD-ROM, tape, and disks.

7. Finally, and most important, peo...

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