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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.
What is locality of reference? Analysis of program represents that many instructions ion localized areas of the program are implemented repeatedly during some time period, and
Question: 1. Distinguish between HTTP and True streaming, stating the advantages and disadvantages of both type of media streaming. 2. Name two online services which provi
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Name the four steps in pipelining. Fetch : Read the instruction from the memory. Decode : Decode the instruction and get the source operand. Execute : Perform the operat
All nodes in the structure of LDB need not be defined in the ABAP/4 Dictionary False. One has to describe all nodes in the Dictionary or single has to select all nodes that a
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