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

What is ram parity, RAM parity checking is the storing of a redundant parit...

RAM parity checking is the storing of a redundant parity bit showing the parity odd or even of a small amount of computer data typically one byte stored in random access memory, an

What the first part of the address identifies in e-mailbox, The first part ...

The first part of the address in electronic mailbox identifies? The first part of address in E-Mail identifies the user's mail box.

Task information displays in search-based tools, Q. Task Information Displa...

Q. Task Information Displays in Search-based tools? Task Information Displays principally give visualization of different locations in parallel program where bottlenecks have o

Determine a ring counter that consisting of five flip-flops, A ring counter...

A ring counter consisting of five Flip-Flops will have ? Ans. A ring counter have 5 states while consisting of Five Flip-Flops.

Differences between flexgrid control and dbgrid control, Normal 0 ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Why dynamic RAMs require refreshing, Explain briefly, why dynamic RAMs requ...

Explain briefly, why dynamic RAMs require refreshing? Ans: Due to the charge's natural tendency to distribute itself in a lower energy-state configuration that is, the charg

Define windows authentication, Windows Authentication This provider uti...

Windows Authentication This provider utilizes the authentication capabilities of IIS. After IIS completes its authentication, ASP.NET uses the authenticated identity's token to

Register data type as sequential element, Reg data type as Sequential eleme...

Reg data type as Sequential element module reg_seq_example( clk, reset, d, q); input clk, reset, d; output q; reg q; wire clk, reset, d; always @ (posedge clk or

Name the software required to run video conferencing, Name The software req...

Name The software required to run video conferencing The software and hardware required to run video conferencing is very sophisticated. Apart from obvious items (that is large

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