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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.
Write a program to mask bits D3D2D1D0 and to set bits D5D4 and to invert bits D7D6 of the AX register.
Task 1: Methodologies are 'regarded as a recommended series of steps and procedures to be followed in the course of developing an information system' and were introduced to im
Why is catch (Exception) almost always a bad idea? Well, if at that point you know that an error has happened, then why not write the proper code to handle that error instead
What is a linker program? Ans. links the program with other programs required for its execution is called a linker program.
What is a privileged instruction? To protect the operating system of a computer from being corrupted by user programs, particular instructions can be executed only whereas the
Q. What are cosmic rays? The ionising radiation several times stronger than γ-rays entering the earth from all the directions from cosmic or interstellar space is known as cosm
Q. Illustrate working of T Flip-Flop? T (Toggle) flip-flop is attained from JK flip-flop by combining inputs J and K together. The implementation of T flip-flop is displayed in
Think about call of two intrinsic functions discussed above for a 32-Processor (4×8) Multicomputer: The function call NUMBER_OF_PROCESORS () will return 32.
Concept Development Journal General Information: Once you have researched and gained some insight into the topic you must then begin developing your ideas and your conceptua
Q. Explain FORM and INPUT Tag? A good way to learn about forms is to make use your notepad editor and make a new HTML document. Save it as form1.htm in some folder somewhere. Y
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