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

Electrically erasable programmable rom - computer memory, Explain Electrica...

Explain Electrically Erasable Programmable ROM - Computer Memory? The next level of erasability is the EEPROM which able to be erased under software control. This is the most f

What is user defined functions, What is User Defined Functions? User-De...

What is User Defined Functions? User-Defined Functions permit defining its own T-SQL functions that can accept 0 or more parameters and return a single scalar data value or a t

How many services are supported by internet, How many services are supporte...

How many services are supported by internet? The firewall software assists at least Internet services: HTTP, FTP, Gopher, SMTP and Telnet. DNS name resolution, preferably th

Explain approaches to identify free memory area in a heap, Discuss two main...

Discuss two main approaches to identify free memory area in a heap. Two popular systems to identify free memory areas as a result of allocation and de-allocations in a heap are

Software engineering, What are coupling and cohesion and why are they impor...

What are coupling and cohesion and why are they important concepts in software design?

Describe the functionality of software testing, What do you do if you have ...

What do you do if you have given functionality that wasn't listed in the requirements? - If the functionality isn't essential to the purpose of the application, it should be re

How much volts a CMOS logic device has approximately, The logic 0 level of ...

The logic 0 level of a CMOS logic device is approximately ? Ans. The low level is 0 volts approx in CMOS logic device.

Recombination - canonical genetic algorithm, Recombination: Therefore...

Recombination: Therefore during the selection and mating process then the GA repeatedly lines up pairs of individuals for reproduction. Hence the next question is how to gener

What is digital versatile disk, Digital versatile disk (DVD) This is an...

Digital versatile disk (DVD) This is an optical system for storing data. It's similar to CD though typically can hold 4.7 Gbyte of data compared to only 700 MB of data on a CD.

Detail explanation of cryptographic modules, Detail explanation of Cryptogr...

Detail explanation of Cryptographic modules Physical security of the cryptographic modules is also built in order to provide total security of the whole system and protect from

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