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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.
How to maintain lists? To return from a high list level to the next-lower level (SY-LSIND), the user chooses back on a secondary list. The system then gives the currently dis
What are the objectives of USB? a) Simple b) Low cost c) Easy to use d) Supports wide range of data transfer characteristics e) Plug and play mode of operation
find a c program to find the area under the curve y=f(x) between x=a and x=b,intregrate y=f(x)between the limits of a and b.the area under a curve between two points can be found b
Cluster is said to be collection of queue manager's logically linked together to balance the load on the remote machine (i.e if it is remote queue managers which processes your mes
Determine about the Security Policy In the United States, the government has a separate organisation looking after the security measures and providing guidelines to all departm
Q. What is Presentation layer? Presentation layer: When two hosts are communicating with each other they might use different coding standards and character sets for represent
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Q Write a menu driven program to perform subtraction in base 5 using r and (r-1) complement with necessary validations.
Advantages of Instruction set architecture: Stack Advantages : it is simple Model of expression evaluation (reverse polish). Contain Short instructions. Disadvanta
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