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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.
Explain Telephone hand set and it's working. A standard telephone set is consisted of a transmitter, electrical network and a receiver for equalization, connected circuitry to
Presumably for heightened tension - first-order logic: As an aside, it's worth pointing out that - presumably for heightened tension - in most Sherlock Holmes books, the m
Problem 1 (a) List and describe the characteristics of mainframes, minicomputers and microcomputers. (b) Briefly describe what is meant by electronic commerce and what b
Before getting into the design the designer should go by the SRS prepared by the System Analyst. The main tasks of design are Architectural Design & Detailed Design. In Arch
what is penetration technique
Q. How to select a table? The easiest way to select a table in Standard view is by using tag selector, which displays HTML tags of elements in document. You will use tag sel
Q. What is the Future of Hyper threading? Current Pentium 4 based MPUs employ Hyper-threading however next-generation cores, Conroe, Merom and Woodcrest will not. As some have
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