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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 the use of buffer register? The buffer register is used to avoid speed mismatch among the I/O device and the processor.
Which method uses the greatest number of layers in the OSI model? Gateway utilizes the greatest number of layers into the OSI model.
Problem: (a) What are the two main advantages of sound? (b) UTMDigitlab ltd, specialized in digitizing sound, converts an audio stream of the latest album of Britney Spea
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how create database design for pharmacy by diagram and query
Sript-Fu is the first GIMP scripting extension. Extensions are split processes that communicate with the GIMP in the similar way that plug-ins do. The distinction is that extension
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Terms in Propositional model: There in first-order logic allows us to talking about properties of objects that the first job for our model (Δ, Θ) is to assign a meaning to the
State about An active graphics device An active graphics device allows the user to communicate with the computer graphically. Generally, this implies that the user is supplyin
Q. Explain the Hard Disk Controller & Floppy Disk Controller with necessary diagrams. Q. Explain Input/Output Techniques (Data Transfer Techniques).
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