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

Syntax of a Procedure in assembly language, There are two kinds of procedur...

There are two kinds of procedures, the intrasegments, which are found on the similar segment of instructions and the inter-segments which can be stored on dissimilar memory segment

Data structure, #question.a tree has 0 off springs at each node. if it had ...

#question.a tree has 0 off springs at each node. if it had a label L, what will be the maximum number of nodes that the tree can have. only an expression involving the number of no

Operating system problems, 1. In discussing software algorithms for mutual ...

1. In discussing software algorithms for mutual exclusion, we noted that optimizing compilers and out-of-order execution by processors could invalidate most of these algorithms bec

What are the most common forms of mixing, Question 1 What is the differenc...

Question 1 What is the difference between Variable Bit Rate and Constant Bit Rate? Question 2 Write a note on: Normalization, Reverberation, Noise Reduction, Filters, and

COMPUTERS IN EDUCATION, What is CAI?Explain its pitsfalls

What is CAI?Explain its pitsfalls

COMPUTER, What is a computer??

What is a computer??

Digital wireless telephone networks, Mobile telephone networks started with...

Mobile telephone networks started with analog technology. Analog cellular networks were known as first generation (1G) networks. Such networks had limited capacity, and were subjec

Discuss about xpointer, Question 1 How PHP works? Explain the structure of...

Question 1 How PHP works? Explain the structure of PHP Question 2 Write a note on links and webs Question 3 Explain why do you need Document Type Definition (DTD)?

Adding macros to ms word 2010 for a particular format, Project Setting up ...

Project Setting up Microsoft Word 2010 to automatically handle as much as possible of the NDSU Graduate School requirements for a disquisition. Accessible from the Graduate Schoo

Convert string to super ascii, A string S is said to be "Super ASCII", if i...

A string S is said to be "Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''''''''a''''''''-'''''''

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