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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. Explain Register Indirect Addressing? In this addressing technique the operand is data in memory pointed to by a register. Or we can say in other words that the operand fie
What is XMS Memory system is divided into 3 main parts. TPA (transient program area), system area and XMS (extended memory system). Type of microprocessor in your computer sign
Q. Create an input buffer ? CODE SEGMENT ... MOV AH, 0AH ; Move 04 to AH register MOV DX, BUFF ; BUFF must be defined in data
Functioning of ROLAP happens concurrently with relational databases. Data and tables are stored as relational tables. To hold new information or data new tables are formed. Functio
Question: (a) What are the rationales for an effective and independent regulator? (b) Across Africa, regulators have established Universal Service Funds (USFs) in order to
Which technique is an encryption technique? Ans. Block cipher technique and also Steam cipher technique is an encryption technique.
How does the system handle roll areas for external program components? Transactions run in their own roll areas. Reports run in their own roll areas. Dialog modules run
Give the Schematic of Interpretation of HLL program and execution of a machine language program by the CPU. The CPU utilizes a program counter (PC) to notice the address of nex
Q. What is Master Clock Signal in Control Unit? The Master Clock Signal: This signal causes micro-operations to be executed in a square. In a single clock cycle either a single
Illustrates about Metal Fix. A Metal Fix implies that only the upper metal interconnects layers are influenced. Connections may be made or broken, but new cells may not be adde
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