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Versions of Windows

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WINDOWS VERSIONS Windows 1.0 In 1985 the first version of windows was a milestone product because it allowed PC users to switch from the MS-DOS method of typing commands at the C prompt. Use a mouse to point and click their way through functions, such as starting applications, in the operating system. Windows 1.0 Screen  Windows 2.0 In 1987 with the second version of Windows, Microsoft took advantage of - The improved Processing speed of the Intel 286 Processor. Expanded Memory. Inter-application communication capabilities using Dynamic Data Exchange (DDE). Windows 2.0 featured support for VGA graphics standard, Allowed users to: - Overlap Windows. -Control Screen layout. -Use Keyboard. -Combinations to move rapidly through Windows Operations. Windows 2.0 Screen Layout Windows 3.0                  In 1990, Microsoft's first mainstream computing platform offered 32 bit...
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Input & Output Devices

Input & Output Devices Of a Computer INPUT DEVICES   Data and instructions are entered into a computer through input devices.  An input device converts input data and instructions into a suitable binary form, which is stored in main memory of a computer. 1. Keyboard  Computer keyboard is an electromechanical component. It Creates special standardized electronic codes when a key is pressed. The codes are transmitted along the cable that connects the keyboard to the computer system unit or terminal, where the incoming code is analyzed and converted into the appropriate computer usable code. Keyboards come in a variety of sizes and shapes having a number of features in common. 2. Mouse The mouse is an input device that is much in use nowadays in graphics as well as when working with the GUI (Graphical User Interface). It slides on a rubber ball in mechanical mouse and laser rays in optical mouse, and has two or more button on the top. when a mouse is s...
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History Of the Computer

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History Of the Computer                              What is computer? Computer is an electronic device which can perform arithmetic and logical operations together. In other word, a computer is an electronic data processing device. It can read and write, compute and compare, store, and process large volume of data. It works at high speed, gives out accurate and reliable results. It works on stored program concept. The word computer comes from Latin word “compute” that means to calculate, to count. Computers were developed from calculators as the need arose for more complex and scientific calculations. Origin of the Computer:          Abacus :      The history of computers starts out about 2000 years ago, at the birth of the  abacus , a wooden rack holding two horizontal wires with beads strung on them. When these beads are mov...
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