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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.
Write a program, using functions, that calculates the area and perimeter of a rectangle whose dimensions (Length & width) are given by a user.
What is SIMD? Single Instruction stream, Multiple Data stream (SIMD) shows an organization that contains many processing units under the supervision of a common control unit. A
Q. What are the main functions of sound cards? Sound card (The card is frequently directly built into motherboards these days) is a board that has digital to analog sound conve
State Disadvantages of object oriented analysis design You know that OO methods only create functional models within objects. There is no place in methodology to design a compl
Why can CRC detect more errors than simple Checksum? There are two purposes a CRC can identify more errors than a simple Checksum. 1. Since an input bit is shifted by all th
Q. Evaluate Speed of disk drive? Drive Speed: Amount of information which can be transferred in or out of memory in a second is called as disk drive speed or data transfer ra
It takes away two constraints which were holding back Web developments: 1. Dependence on a one, inflexible document type (HTML) which was being much abused for tasks it was neve
every source is coherent source-justify it?
Subtraction of 0011.1001 - 0001.1110 using 2's complement method Ans. Firstly 1's complement of 0001.1110 is 1110.0001 and 2's complement is 1110.0010. If a last carry
List out the main requirements between page replacement policies which should be satisfied by a page replacement policy? The major requirements that should be satisfied
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