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Why do we need Registers?
If tcpu is cycle time of CPU which is the time taken by CPU to execute a well-defined micro-operation employing registers and tmem is memory cycle time which is the speed at which memory can be accessed by CPU then (tcpu/tmem) is in the range of 2 to 10 i.e. CPU is 2 - 10 times faster than memory. So CPU registersare the fastest temporary storage areas. So the instructions whose operands are stored in fast CPU registers can be executed fast in comparison to instructions whose operands are in main memory of a computer. Every instruction should designate the registers it will address. So a machine needs a large number of registers.
Figure: CPU with general register organisation
How many select lines will a 32:1 multiplexer will have ? Ans. 5 select lines will be required for 32 inputs, as 2 5 = 32.
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Define interrupt. An interrupt is any exceptional event that causes a CPUU to temporarily transfer control from its present program to another program , an interrupt handler th
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Q. Illustrate Shift Micro-operations? Shift is a valuable operation that can be used for serial transfer of data. These operations can also be used along with other (arithmetic
Define the meaning of Registers and Counting? Registers: Group of flip-flops use for data storage. Counting: Another extremely important application of flip-flops is in dig
Objectives of Parallel Computing After reading this topic, you would be able to: Tell historical details of parallel computing; Explain the fundamental ideas of dis
Name the platforms by which visual basic applications are available? Ans) Most of the visual basic applications are available on 32 bit Intel platforms. These applications also
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