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

Assembly language, Assembly language : Assembly language is a low level...

Assembly language : Assembly language is a low level programming language similar to machine language, but far easier to write and understand because machine language binary in

ICT, what are the significance of telecommunications deregulation

what are the significance of telecommunications deregulation

Define stocktaking, QUESTION (i) Define each of the following terms: ...

QUESTION (i) Define each of the following terms: a) Book trade catalogue b) Stocktaking c) Ephemera d) Contracting out e) Special library (ii) Discuss the adv

Algorithm - programming language, Algorithm : Once a problem has been defi...

Algorithm : Once a problem has been defined precisely, a procedure or process must be designed to produce the required output from the given input. Since a computer is a machine t

Ascii & unicode, ASCII code:  An alphanumeric code has to represent 10...

ASCII code:  An alphanumeric code has to represent 10 decimal digits, 26 alphabets and certain other symbols such as punctuation marks and special characters. Therefore, a min

Multiple Statement Groups as Suites, Sets of individual statements making u...

Sets of individual statements making up a single code block are known as suites in Python. Composite or complex statements for example if, def while and class are those which neces

Microsoft office, Finding someone who doesn''t use some aspect of Microsoft...

Finding someone who doesn''t use some aspect of Microsoft Office on a daily basis is difficult. Whether it is Outlook for email,Word for creating and editing documents,or Excel f

Write a program to solve a maze 10x10, write a program to solve a 10x10 maz...

write a program to solve a 10x10 maze. prompt the user for an input text file containing ten rows(ten characters on each row). Use following characters in the input file: * startin

DATA STRUCTURE, WHAT IS DATA STRUCTURE AND EXPLAIN ME.

WHAT IS DATA STRUCTURE AND EXPLAIN ME.

Networking and telecommunications, NETWORKING AND TELECOMMUNICATIONS: ...

NETWORKING AND TELECOMMUNICATIONS: Computers can now communicate with each other and with a range of peripheral devices, over distances with increasing speed and reliability.

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