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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.
Q. Write a program to implement NOR, NAND, XOR and XNOR gates using and without using bit wise operator. Also perform necessary checking. The user has option to give n numbe
State the features of Pentium series of microprocessors: Pentium is a 32-bit superscalar, CISC microprocessor. The term superscalar is used for processor that contains more th
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In a RAM, information can be stored ? Ans. RAM is used by the user, number of times.
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What is the system call available to change the personality? The system call personality prefers to a method to modify its implementation domain in order that Linux can emulate
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