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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 MFC. To accommodate the variability in response time, the processor waits unless it receives an indication that the requested read operation has been done. The control s
What are the conditions that have to be met for a condition to be an invariant of the class? Ans) ? The condition should hold at the end of each constructor. ? The conditi
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EBS uses an embedded ARM microprocessor.
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Subroutine are the part of implementing processes (like any process can call a subroutine for achieve task), whereas the interrupt subroutine never be the part. Interrupt subroutin
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