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

Explain salient points about indirect addressing, Q. Explain salient points...

Q. Explain salient points about indirect addressing? A number of salient points about this scheme are:  In this addressing scheme effective address EA and contents of th

What are types of applets, There are two different parts of applets. Truste...

There are two different parts of applets. Trusted Applets and Untrusted applets. Trusted Applets are applets with predefined security and Untrusted Applets are applets without any

Explain input - output techniques, Q. Explain the Hard Disk Controller & F...

Q. Explain the Hard Disk Controller & Floppy Disk Controller with necessary diagrams. Q. Explain Input/Output Techniques (Data Transfer Techniques).

Explain about the term middleware, Explain about the term Middleware. M...

Explain about the term Middleware. Middleware is the term frequently used to explain the application or business logic present within an application server. Unfortunately, simi

How many bits must be decoded for 128 × 8 ram chips, How many bits must be ...

How many bits must be decoded for chip select? What is the size of decoder when 128 × 8 RAM chips are required to provide a memory capacity of 2048 bytes? Ans. All higher order l

Define compilers and interpreters with high level language, Define compiler...

Define compilers and interpreters with high level language? Both compilers and interpreters are available for most high-level languages. Though LISP and BASIC are in particular

Define message passing, Q. Define Message Passing? The PVM communicatio...

Q. Define Message Passing? The PVM communication model offers asynchronous blocking receive and asynchronous blocking send and nonblocking receive functions. In our terminology

use and benefits of object-oriented programming, The Chocolate Delights Ca...

The Chocolate Delights Candy Company requires to add the following functionality to its cash register: When a customer is checking out, the cash register requires keeping the ne

Describe architecture of wap gateway, Describe architecture of WAP gateway....

Describe architecture of WAP gateway. WAP GATEWAY : It is a very unique product giving semi-automatic redirection of HTML documents to WAP compatible mobile phones. Wir

How can i execute a php script using command line, Just run the PHP CLI (Co...

Just run the PHP CLI (Command Line Interface) program and give the PHP script file name as the command line argument. For instance, "php myScript.php", assuming "PHP" is the comman

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