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

Define the register addressing mode, Q. Define the Register Addressing mode...

Q. Define the Register Addressing mode? When operands are taken from registers implicitly or explicitly it is known as register addressing. These operands are termed as regis

Explain the term- wire and register, What is the difference between wire an...

What is the difference between wire and reg? Net types: (wire,tri)Physical connection between structural elements. Value assigned by a continuous assignment or a gate output.

What is asynchronous reset, What is Asynchronous Reset? Asynchronous re...

What is Asynchronous Reset? Asynchronous reset: The biggest problem along with asynchronous resets is the reset release, which termed as reset removal. By using an asynchron

What is cartridge drive, Q. What is Cartridge Drive? Cartridge Drive: ...

Q. What is Cartridge Drive? Cartridge Drive: A cartridge is a protective covering or case which is used to hold a magnetic tape, disk, a printer ribbon or toner. Contents are

Compiler software difficulty, IA-64 instead depends on the compiler for thi...

IA-64 instead depends on the compiler for this task. Even before the program is fed into the CPU, the compiler studies the code and makes the similar sorts of decisions that would

Define the meaning of registers and counting, Define the meaning of Registe...

Define the meaning of Registers and Counting? Registers: Group of flip-flops use for data storage. Counting: Another extremely important application of flip-flops is in dig

Visual basic applications in general context, Describe some general uses fo...

Describe some general uses for Visual basic applications in general context? Ans) Visual basic can be used within almost all Microsoft products such as Map point, Visio, Auto ca

Name various work processes of r/3 system, Name various work processes of R...

Name various work processes of R/3 system? A) Dialog or Online (processes only one request at a time). B) Background (Started at a specific time) C) Update (primary or se

What do you mean by first fit, What do you mean by first fit? First fi...

What do you mean by first fit? First fit allocates the first hole that is big enough. Searching can either begin at the beginning of the set of holes or where the last first-f

Find out the hexadecimal sum, Find the hex sum of (93) 16 + (DE) 16 ? Ans...

Find the hex sum of (93) 16 + (DE) 16 ? Ans. Hex Sum of (93) 16 + (DE) 16 Convert Hexadecimal numbers 93 and DE to there binary equivalent demonstrated below:- Hence (9

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