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Q. What do you understand by Scan Codes?
A scan code is a code produced by a microprocessor in keyboard when a key is pressed and is unique to key struck. When this code is received by computer it reports an interrupt and looks up scan code table in BIOS and realize which keys have been pressed and in what combination. Special memory locations known as status bytes tell the status of locking and toggle keys for example Caps lock etc. Every key press produces two different scan codes - one on key-push down known as Make code and another on its popping back known as Break code. This two-key scheme enables the computer to tell when a key is held pressed down for example ALT key when pressing another key say CTRL-ALT-DEL.
Disadvantages of wireless technology - Range can be very limited - Possible interference from nearby electronic devices - Security issues (i.e. tapping illegally into
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What is application software? Give example. Application programs are usually written in a high level programming language, in which the programmer states mathematical or text p
Q. Logic diagrams for same Boolean expression? The expression F can be simplified using Boolean algebra. The logic diagram of simplified expression is drawn in fig (b)
Capacity and access speed: PC hard disk drive capacity (measured in GB). The vertical axis is logarithmic, so the accurate line corresponds to exponential growth. By using
How can i made Carnot engine
Example of Pruning: As an example, we are assume that the four choices for player one, there we are looking only two moves ahead 1 for player one and 1 for player two such as
Explain the architecture of SS7 . A block schematic diagram of the CCITT no. 7 signaling system is demonstrated in figure. Signal messages are passed by the central proces
Convert binary number in two's compliment form 0100 1000. Converting the binary number into 2's compliment from 0100 1000 is given below: 01001000 => 10111000
Throughput of a system is? Ans. "Throughput" of a system is no. of programs processed by this per unit time.
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