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

Data validation and data transfer, Data Validation condition: The following...

Data Validation condition: The following condition stated below must be met for a data to be valid as is shown in the figure 3a below. 1. The data on the SDA line must remain stabl

Dram, DRAM consists of MOSFET's but the technique is to use the drain sourc...

DRAM consists of MOSFET's but the technique is to use the drain source capacitance to hold charge. If charge is present logic '1' is held, no charge logic '0'. As you know capacito

How to convert binary to octal and hexadecimal, Q. How to convert Binary to...

Q. How to convert Binary to Octal and Hexadecimal? Rules for these conversions are simple. For converting binary to octal binary number is splitted in groups of three, that are

What are the static and dynamic hazards in logic circuits, If for a short p...

If for a short period of time circuits goes to some dissimilar logic level then it is assumed to have then it is known as static hazard e.g. If the final logic value of output of a

Mathlab , Windy Grid World This assignment is to use Reinforcement Learni...

Windy Grid World This assignment is to use Reinforcement Learning to solve the following "Windy Grid World" problem illustrated in the above picture. Each cell in the image is a

Stack overflow causes, Stack overflow causes   (A) Hardware interrupt. ...

Stack overflow causes   (A) Hardware interrupt.  (B) External interrupt.  (C) Internal interrupt.   (D) Software interrupt. Stack overflow occurs whereas execution

Define various system, Define various system? Single job system: Only...

Define various system? Single job system: Only one program may be run at a time, and therefore only one person might be work on a machine at one time.  Multi job system:

How the information can be stored, In a RAM, information can be stored ? A...

In a RAM, information can be stored ? Ans. RAM is used by the user, number of times.

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