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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.
COMPUTER INPUT: Figure shows input information for a typical airborne digital computer. The sensors in Figure develop analogue electrical signals representing: -
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how we come to know about primary key,if more than ids gather?
20*2
Internal interruptions are produced by convinced events which come during the execution of a program. These types of interruptions are handled on their totality by the hardware and
You have been approached by Company XYZ to design and deploy a new network that will span three cities in Queensland: Brisbane (12 users), Gold Coast (8 users), and Cairns (6 users
memory
draw associative mapping
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