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Output Devices
Video Display Unit (VDU) or Monitor
Video Display Unit is similar to a television. It is used to display the results of processes. The screen is illuminated by a number of dots known as pixels. The number of dots per unit area is called resolution. The higher the resolution, the better will be the quality of the picture. A lighted symbol in a form of a line or rectangle visible on the screen known as Cursor, to indicate the position for typing a command. If any keys are pressed, it moves along the alphabet typed. A typical Video Display Unit screen can accommodate 25 lines, each line consisting of 80 characters.
Printers
There are various kinds of printers. They are basically divided into two categories:
Impact printers and Non-impact printers.
Data transmission: Most digital communication data is transmitted in a serial form, that is, only one bit at a time. Transmission of data in serial form means each bit is tran
System software: System software helps run the computer hardware and system. It is designed to control the operations of a computer and coordinate all external devices like c
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Synchronous and Asynchronous Transmission: Another method of setting of terminals denotes synchronous or asynchronous transmission. Many terminals can only communicate in one
Question 1 Define the following terms 1) Analog Signals and Digital Signals 2) Composite signals Question 2 Define the following terms
Pebble Merchant Problem Description There is a pebble merchant. He sells the pebbles, that are used for shining the floor. His main duty is to take the length of the room’s sides.
What is new? ERP, on the other hand begins with a fresh relook at the existing business. In fact it is the result of a happy marriage between Business Process Reengineering (BP
constant key use for in calculator
Backup software: A number of Backup software are available that assist you in taking backup of your important data on the computer. Selecting between various back-up software
7. Name and explain the action in Conceptual Dependency which refers to a transfer of possession.
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