User Account

All Pages

about execution cycle, Basic Computer Science

Assignment Help:
One time a program is in memory it has to be executed. To do this, each instruction must be appeared at, decoded and acted upon in turn until the program is finished. This is accomplished by the use of what is termed the ''instruction execution cycle'', which is the cycle by which each instruction in revolve is processed. However, to make sure that the execution proceeds easily, it is also necessary to synchronize the activities of the processor.
To go on the events synchronized, the clock located within the CPU control unit is used. This creates regular pulses on the system bus at a specific frequency, so that each pulse is an equal time subsequent the last. This clock pulse frequency is related to the clock rate of the processor - the higher the clock speed, the shorter the time between pulses. Actions only take place when a pulse is detected, so that commands can be kept in time with each other across the entire computer unit.
The instruction execution cycle can be undoubtedly divided into three different components, which will now be appeared at in more detail.
Fetch Cycle
The fetch cycle gets the address required from memory, stores it in the instruction register, and moves the program counter on one so that it points to the next instruction.
Decode Cycle
in it, the control unit ensures the instruction that is now stored within the instruction register. It concludes which opcode and addressing mode have been used, and as such what actions need to be carried out so as to execute the instruction in question.
Execute Cycle
the definite actions which occur during the execute cycle of an instruction depend on both the instruction itself, and the addressing mode specified to be used to access the data that may be involved. Though, four main groups of actions do exist, which are discussed in full later on.

Related Discussions:- about execution cycle

Discuss about the descriptor classes, Question 1 List down any six feature...

Question 1 List down any six features of a Smartphone Question 2 Give a brief note on a) Internal Flash Disk. b) Use of C++ in Symbian OS Question 3 What are the naming

Computer education, what is cai explain its pitfalls

what is cai explain its pitfalls

Java programming, Write a program that lets the user play the game Rock, Pa...

Write a program that lets the user play the game Rock, Paper, Scissors against the computer. The program should work as follows: ? When the program begins, the results of the prev

Algorithm implementation, Implementing the -Crochemore-Perrin algorithm Th...

Implementing the -Crochemore-Perrin algorithm The software must be functional, code must be clear and including comments and it must have a nice and decent user interface

Explain any five different types of computers, Question 1 Explain any five...

Question 1 Explain any five different types of computers Question 2 Describe Bus Type LAN. Its disadvantages and advantages and examples Question 3 Describe the

Processor, Processor: Processor plays major role in a computer. One sh...

Processor: Processor plays major role in a computer. One should carefully decide about the type of processor and its speed before making a choice. Currently Core 2 Duo process

Democracy and ICT, Ask questio Discuss the idea of democracy and its overl...

Ask questio Discuss the idea of democracy and its overlapping meanings for IS design. How would you democratically design IS? How does participation help the practice of democrac

Software engineering, 158.254 Software Development Lifecycle Management Ass...

158.254 Software Development Lifecycle Management Assignment 1 This assignment focuses on requirements engineering. The context to this assignment is the development of a system

Algorithms and pseudocodes.., how do you write the algorithm and the pseudo...

how do you write the algorithm and the pseudo code for cramer''s rule in visual basic.

Assigment, how to measure marginal utility.?

how to measure marginal utility.?

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd