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 do you mean by daisy chain, Q. What do you mean by Daisy chain? Th...

Q. What do you mean by Daisy chain? This scheme provides a hardware poll. With this scheme, an interrupt acknowledge line is chain by different interrupt devices. All I/O inter

What is cursor, The illustration of the mouse on-screen. Depending on your ...

The illustration of the mouse on-screen. Depending on your settings, the cursor can be many dissimilar things.

Explain importance of modems used in data transfer, Explain importance of ...

Explain importance of modems used in data transfer and list some of the V-series recommendations. The series also describes a variety of DCEs using different type modulatio

Show the advantages of joint application development, Q. Show the advantage...

Q. Show the advantages of Joint Application Development? The following are the numerous advantages of Joint Application Development: Actively includes management and use

Explain difference between scanning and parsing, Explain difference between...

Explain difference between Scanning and parsing. Scanning and parsing: Scanning process is the process of recognizing the lexical components in a source string whereas parsin

Explain HLL program & execution of machine language program, Give the Schem...

Give the Schematic of Interpretation of HLL program and execution of a machine language program by the CPU. The CPU utilizes a program counter (PC) to notice the address of nex

Use of parallel construct with private clause, Q. Use of parallel construct...

Q. Use of parallel construct with private clause? In this example we would see use of parallel construct with private and firstprivate clauses. At end of program i and j remain

How can i pass parameters to my simulation, How can I pass parameters to my...

How can I pass parameters to my simulation? A  test  bench  and  simulation  would likely  need  many  different  parameters  and  settings  for  various sorts of tests and con

Move a layout cell, If you need to line up the cells next to each other you...

If you need to line up the cells next to each other you can resize and move layout cells as you need. You can change size of a layout cell by using one of its resize handles. Yo

Describe the von neumann architecture, Describe the VON NEUMANN ARCHITECTUR...

Describe the VON NEUMANN ARCHITECTURE Most  of  present  computer  designs  are  based  on  idea  developed  by  John  vonNeumann referred to as the VON NEUMANN ARCHITECTURE. V

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