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

C++ programming, how does a ohms law c++ programming works

how does a ohms law c++ programming works

Define colgroup tag, COLGROUP defines a group of columns in table and...

COLGROUP defines a group of columns in table and allows you to set properties of those columns. goes immediately after tag and before an

What is scsi, What is SCSI? Ans: It is the acronym for small computer s...

What is SCSI? Ans: It is the acronym for small computer system interface. It refers to a standard bus explained ANSI. Devices such as disks are linked to a computer via 50-wire

Managerial benefits, MANAGERIAL BENEFITS Implement integrated relia...

MANAGERIAL BENEFITS Implement integrated reliability engineering and product assurance program in all aspects of the product life-cycle, covering purchase, engineering, R&D

What are the external storage systems, External storage systems A numb...

External storage systems A number of different types of external memory devices are available now. Some of these are considered below (hard drives haven't been mentioned as th

Features of read-only memory, Q. Features of read-only memory? ROMs are...

Q. Features of read-only memory? ROMs are memories on which it's not possible to write data when they are on-line to computer. They can only be read. This is reason why it is k

Computers, Purpose: Front line client service. Make bookings for vehicle se...

Purpose: Front line client service. Make bookings for vehicle servicing, accesses client database, prints invoices for clients etc. The mechanics complete worksheets for the variou

Difference between packet switching and circuit switching, What are the adv...

What are the advantages and disadvantages of packet switching over circuit switching? The comparison of packet switching and circuit switching demonstrating advantages and disa

What is asp.net authentication providers and iis security, What is ASP.NET ...

What is ASP.NET Authentication Providers and IIS Security? ASP.NET implements authentication using authentication providers, which are code modules that verify credentials and

What is a convertor?, Converter is an application that converts distance me...

Converter is an application that converts distance measurements among metric and U.S units.

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