Introduction
1.1 Background of Study
Computer is one of the most important single tools for driving educational development. The computer is defined as a data processing machine that accepts input data, processes it and outputs a result (Forouzan and Mosharraf, 2008). Bakpo (2014) described the computer as an electronic machine operating under the control of instructions stored in its memory and able to capture or accept data, manipulate the data according to specified rules, produce results and store the results for future use. The computer may therefore be defined as a multipurpose electronic device which is capable of accepting data, storing, processing it, and giving out the processed results under the control of stored instructions. These functions are possible because of harmonious working among the computer’s component parts.
Computer has two major component parts: hardware (the visible, tangible components) and software (the programs or processing instructions). Computer hardware is further divided into several parts: input devices, central processing unit (CPU), and output devices. Input devices are used to send data into the computer for further processing or storage. These input devices include the keyboard, mouse, joystick, touch pen, touch pad, magnetic ink character recognition (MICR), voice recognition, forensic tools, e.t.c. The mouse, touch pen, touch pad and joystick are generally referred to as pointing devices. Along with the keyboard, the pointing devices form the most common input devices employed for sending data into the central processing unit (Bakpo, 2014).
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