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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. Develop a Menu driven program with following menu: 1. Octal to Decimal 2. Octal to Hexadecimal 3. Octal to Binary
What is page fault? Its types? Page fault refers to the situation of not having a page in the major memory when any process references it. There are two kinds of page fault :
Which of the fastest logic: TTL, ECL, CMOS and LSI ? Ans. The fastest logic family of all logic families ECL. High speeds are possible in ECL since the transistors a
PRAM is one among the models which are used for designing the parallel algorithm as shown in Figure. The PRAM model comprises the following components: i) A group of identical
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 T Flip Flop? The toggle, or T, flip-flop is the bistable device that changes state on command from a common input terminal. Truth Table
What are various types of Shift Registers ? Ans: Kinds of Shift Registers: (i) SISO that is Serial-In Serial-Out Shift Register (ii) SIPO that is Serial-In P
The message queue provides the information about sizes of queues under utilization of various processors. It points to size of every processor incoming message queue that would be
usability of union
Q. Describe Critical Directive in FORTAN? The critical directive permits one thread executes associated structured block. When one or more threads attain critical directive the
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