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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.
ISDN handles data pertaining to? ISDN handles data pertaining to all digital services.
Q. Characteristics of input- output channels? The I/O channel represents an extension of DMA concept. An I/O channel has ability to execute I/O instructions that gives complete
Analysis: Basically, it is the process of determining what requirement to be done before how it should be done. In order to accomplish this, the developer shows the existing sy
Q. Explain about Double Error Detection bit? Let's presume now that two bit errors take place in data. Data received: So on -matching we conclude P3-D3 pair doesn't
tell some thing about htmleditor in extjs whether it contains attachment button or not
Accumulator is the register in which Arithmetic and Logic calculations are completed.
Explain about IP Access. IP access on the network by: • Intranets onto Virtual IP Networks and • Extranets onto Virtual IP Networks.
It depends on our requirement. When we are needed an integer to be stored in 1 byte (means less than or equal to 255) we use short int, for 2 bytes we use int, for 8 bytes we use l
Question: (a) Describe the importance of Micro-Programming and point out one area where Micro-Programming is extensively used. (b) Below is a diagram of an 8086 processor.
Defines a macro Defines a macro with the given name, having as its value the given replacement text. After that (for the rest of the current source file), wherever the preproce
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