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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. Role of information system in business? Ans. 1. Information System is grouping of two terms namely - 1) Information 2) System 1. Information - Information is dat
Q. Can you explain about Internet Protocol? Internet protocol specifies the rules which define the details of how computers communicate. It specifies exactly how a packet shoul
can u please tell me the assembly language program for carry look ahead adder that can run in 8086 emulator?? its urgent
How can we decrement and increment operations We can implement decrement and increment operations by using a combinational circuit or binary down/up counters. In
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What are the components of I-way Infrastructure? There are three components of the I-way infrastructure: • Consumer access equipment • Local on-Ramps • Global informat
contributes to violence in our society. Others point out that television contributes to the high level of obesity among children. Now, we may have to add financial problems to the
define file system
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Many physicists believe that the universe is governed by a single system. A system which is capable of describing the behaviour of the very large (stars and planets) and the very s
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