chap1 - Computer Science Department (CSD) Centre for...

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FOSEE , MULTIMEDIA UNIVERSITY (436821-T) MELAKA CAMPUS, JALAN AYER KEROH LAMA, 75450 MELAKA, MALAYSIA. Tel 606 252 3594 Fax 606 231 8799 URL: http://fosee.mmu.edu.my/~csd/ Computer Science Department (CSD) Centre for Foundation Studies and Extension Education (FOSEE) PCA 0015 Computer Applications Foundation in Engineering ONLINE NOTES Chapter 1 The History and Basics of Computing
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PCA0015 Computer Applications Chapter 1 Objectives: Upon completion of this topic, the students should be able to: Define the term computer. Identify the components of a computer. Compare the computer technology from the first generation till present. Classify different types of computers and their uses. 1.0 Introduction to Computer Applications 1.1 What is a computer? A computer is an electronic machine that can be programmed to accept data ( input ), process it into useful information ( output ), and store it in a secondary storage device for future use. The processing of input is directed by the software but performed by the hardware Hardware is the physical equipment that you can see and touch e.g. mouse, monitor, speakers Software is a program or electronic instructions that tell the computer what to do, when and how to do it. CSD Lecturers 2/10
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PCA0015 Computer Applications Chapter 1 The CPU / Processor is the brain of the computer located in the computer's system unit. Memory or RAM is the computer workspace Storage Devices or Secondary Storage are devices that store data and programs permanently e.g. diskette, hard disk On the left is an example of specifications for PCs sold online. You will learn more about it in topic 2, 3 and 4. Most advertisements will show the speed and type of the CPU, the size of the memory, hard disk and monitor and the Operating System used. Some computer components reside in the system unit , which are internal, and some are external devices that are attached to a computer, which includes all input, output, and some secondary storage devices. Those external devices are called peripherals . For larger computer system, the input, processing, output, and storage functions may be in separate rooms or building. 1.2 The History and Evolution of Computers Objective : Student musts know the important names and milestones , do not need to memorize any dates! The invention of computers began before the discovery of electricity. Thousands of years ago, people started seeking easier ways to add and subtract. It evolved from simple calculations using fingers then paper, mechanical devices and now electrical devices. CSD Lecturers 3/10
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PCA0015 Computer Applications Chapter 1 The first tools used as aids to calculation were almost certainly man's own fingers. As the need to represent larger numbers grew, early man employed
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chap1 - Computer Science Department (CSD) Centre for...

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