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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.
Define Rules For Evaluating the Boolean Expression? Generally, the following rules must always be followed when evaluating the Boolean expression: Primary, perform all in
explain parallel database system
Q. Explain Working of TELNET? The working of TELNET 1. Commands and characters are sent to operating system on common server computer. 2. Local operating system send
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For this assignment, fill out the following class: class person { private: string firstName; string lastName; int weight; public: . . . }; You should provide cons
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Q Develop a menu driven program to perform Binary addition and subtraction on two numbers that are inputted. Check that entered numbers are in base 2 or not else error messag
Explain the mechanidm of the rusting of iron on the basis of electrochemical corrosion?
What are the phases of swapping a page from the memory? Page stealer searches the page eligible for swapping and places the page number in the list of pages to be swapped. K
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