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

Main problems with evaluation functions, Main problems with evaluation func...

Main problems with evaluation functions: Superlatively, evaluation functions should be quick calculates. Wherever is chance they take a long time to estimate, so after then le

State about the firewalls - intranet, Firewalls While getting one fire...

Firewalls While getting one firewall for the company's Intranet it should be well known that firewalls come in both hardware and software forms, and that even though all firew

Explain stored program control, Explain Stored Program Control. Stored...

Explain Stored Program Control. Stored Program Control: Modern digital computers utilize the stored programmed idea. Now, a program or a set of instructions to the computer i

Tcp connection , a) What command do you use to file all active and availabl...

a) What command do you use to file all active and available sockets? These should also contain UNIX domain sockets, which are primarily used for local connections.   b) What sta

Explain the e-cheques verses credit cards in brief, Explain the E-cheques v...

Explain the E-cheques verses Credit Cards in brief. E-cheques: E-cheques are utilized for business dealing into e-commerce. Transactions of such cheques take place onto Inter

Mobile computing, Explain the key characteristics of mobile computing appli...

Explain the key characteristics of mobile computing applications

How to maintain lists, How to maintain lists? To return from a high li...

How to maintain lists? To return from a high list level to the next-lower level (SY-LSIND), the user chooses back on a secondary list.  The system then gives the currently dis

Device controllers, All components of computer communicate with processor b...

All components of computer communicate with processor by the system bus. Which means I/O devices required to be attached to system bus. But I/O devices aren't connected directly to

How can you insert text in dreamweaver, Q. How can you insert text in dream...

Q. How can you insert text in dreamweaver? In Dreamweaver, you can type content directly into a layout cell, or you can cut and paste content from another document into a layou

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