author: Sajjad Heder » Page 2
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2009.08.24
What is a Flat Screen?
Flat screen are slowly replacing the conventional CRT monitors, as they are bulky. These were introduced for use on battery-operated...
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2009.08.23
Cathode Ray Tubes monitor (CRT)
Those monitors based on Cathode Ray Tubes (CRTs), similar to those used in TV sets. Below the figure illustrates the basic...
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2009.08.23
What is a Computer Monitor?
The number of pixels or picture elements on the screen determines the resolution or clarity of the picture that monitors...
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2009.08.23
Video Camera and Scanner
Video cameras are versatile derives, being able to capture images of any type, including solid objects. Scanners are limited...
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2009.08.21
What is a Character-recognition Device?
One type of character-recognition device enables the user to input text and numerical data by handwriting it in capital letters...
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2009.07.21
What is a Computer Microphone?
It is quite easy to convert the spoken word to a digital signal for computer input. The microphone converts audio signals...
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2009.07.21
What is a Computer Mouse?
The mouse is a hand-held device with optical laser protruding from its base. As you push the mouse over the surface of the...
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2009.07.21
What is a Computer Keyboard?
The keyboard is still the primary device for inputting information to a computer, though voice input devices may ultimately...
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2009.07.21
Input and Output Devices
Before a computer can get to work solving a problem, it must be given the program and the data if there is any. After it...
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2009.07.21
Application Software
This is the software that enables us to do the things that we bought our computer for, such as typing a letter, preparing...
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