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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.
what is dbms goal?
What are the advantages of using structure in C Program Declaring a struct is a two-stage process. The first stage defines a new data type that has the required structure which
Of the two "next screen "attributes the attributes that has more priority is?? Dynamic.
Design a 32:1 multiplexer using two 16:1 multiplexers and a 2:1 multiplexer Ans. Design a 32 X 1 MUX by using two 16 X 1 MUX and one 2 X 1. Now here total 32 input lines
Software Development Life Cycle (SDLC):- SDLC (System Development Life Cycle) is a well-defined process by which a system is conceived developed and implemented. In other sense a S
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Difference between Paperbase and computer base system?
We will be using data from the 2008 Canadian General Election Study.1 The data can be found on the course page. As well, there are three other documents (loosely called "codebooks"
What are interrupts? Interrupt: An interrupt is a hardware mechanism which enables an external device, classically input/output devices, to send a signal to the CPU. An int
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