Why do we need registers, Computer Engineering

Assignment Help:

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.

1440_Why do we need Registers.png

Figure: CPU with general register organisation


Related Discussions:- Why do we need registers

Find max conversion time of 6-bit dual slope A/D converter, A 6-bit Dual Sl...

A 6-bit Dual Slope A/D converter uses a reference of -6V and a 1 MHz clock. It uses a fixed count of 40 (101000). Find Maximum Conversion Time.         Ans. The time T 1 specifie

C LANGUAGE PROGRAMME, find a c program to find the area under the curve y=f...

find a c program to find the area under the curve y=f(x) between x=a and x=b,intregrate y=f(x)between the limits of a and b.the area under a curve between two points can be found b

Explain about distributed shared memory systems, Explain about Distributed ...

Explain about Distributed Shared Memory Systems? Distributed Shared Memory (DSM) systems emulate a shared memory abstraction on loosely coupled architectures in order to allow

Verilog, http://www.cse.psu.edu/~dheller/cmpen331/Homework/Homework4.htmlwo...

http://www.cse.psu.edu/~dheller/cmpen331/Homework/Homework4.htmlwords accepted#

Determine about the microprocessor, Determine about the microprocessor ...

Determine about the microprocessor A microprocessor contains at the least CPU which was the case in 1970s and early 1980s. Today they include cache memories, bus interfaces, an

Explain about behavioral notations, Explain about Behavioral Notations ...

Explain about Behavioral Notations These notations contain dynamic elements of the model.  Their elements comprise interaction and the state machine. It also comprise classe

Illustration of code conversion, Program: A good illustration of code conve...

Program: A good illustration of code conversion: Write a program to convert a; 4-digit BCD number into its binary equivalent. BCD number is stored as a; word in memory location kno

What are the differences between one hot and binary encoding, What are the ...

What are the differences between one hot and binary encoding? Common classifications used to explain the state encoding of an FSM is Binary or highly encoded and one hot. A bin

Cisc approach - cisc architecture, CISC Approach - CISC architecture: ...

CISC Approach - CISC architecture: The main goal of CISC architecture is to finish a task in as few lines of assembly as possible as. This is gain by building processor hardwa

Computer graphics, explain area sub division method algorithm

explain area sub division method algorithm

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd