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 are the advantagesof fact finding, What are the Advantagesof fact find...

What are the Advantagesof fact finding - Analyst obtains reliable data - It's possible to see exactly what is being done -  This is an inexpensive method in comparison o

Explain the term confidentiality - firewall design policy, Explain the term...

Explain the term Confidentiality - Firewall Design Policy Whilst some corporate data is for public consumption, the vast majority of it should remain private.

Explain difference between space and time division switching, Through two b...

Through two block diagrams explain the difference between Space division and time division switching. Space and Time Switching: Space Switches: Connections can be made i

How many types memory mgt can divided, They are of two types. They are big ...

They are of two types. They are big endian and little endian. Memory is separated into two bank, 1:even bank 2:odd bank.

What are the mechanisms for implementing i/o operation, What are the variou...

What are the various mechanisms for implementing I/O operations? a) Program controlled I/O b) Interrupts c) DMA

Name some register output control signals, Name some register output contro...

Name some register output control signals. Pc out , MDR out , Z out , Offset out , R1 out , R2 out , R3 out and TEMP out .

Swing, how to make a dfd of simple calculator?

how to make a dfd of simple calculator?

What is redefines clause, Redefines clause is used to permit the similar st...

Redefines clause is used to permit the similar storage allocation to be referenced by dissimilar data names.

Show the memory hierarchy of computer system, Q. Show the Memory Hierarchy ...

Q. Show the Memory Hierarchy of computer system ? Memory in a computer system is essential for storage and subsequent retrieval of instructions and data. A computer system uses

Electronic typewriter , Electronic typewriter : An electronic typewriter h...

Electronic typewriter : An electronic typewriter has a 'memory' or 'electronic brain' which enables it to recall the whole document at a time and type it automatically at the pres

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