Customer Service Chat
Get quote & make Payment
about execution cycle, Basic Computer Science
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.
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.
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.
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.
Posted Date: 5/3/2012 7:54:42 AM | Location : United States
Ask an Expert
about execution cycle, Assignment Help, Ask Question on about execution cycle, Get Answer, Expert's Help, about execution cycle Discussions
Write discussion on about execution cycle
Your posts are moderated
Write your message here..
Analogue to digital converter, Analogue to digital converter: In an ADC...
Analogue to digital converter: In an ADC a range of input values must correspond to a unique digital word. The type of code used depends on the system but here only binary cod
What is i-node number, Question 1 Bring out the advantages of Linux Ope...
Question 1 Bring out the advantages of Linux Operating systems Question 2 Match the Symbols with their respective file types Symbol File N
Pseudocode, How Much Insurance? Many financial experts advise that property...
How Much Insurance? Many financial experts advise that property owners should insure their homes or buildings for at least 80 percent of the amount it would cost to replace the st
Batch processing, Batch Processing When the entire computer system is d...
Batch Processing When the entire computer system is dedicated to a single job, the system is said to be operating in Batch Processing mode. In this mode each program is run to
#algorithm, #to determine whether given year is leap year or not
#to determine whether given year is leap year or not
Shell, for loop
Liquid crystal displays, Liquid Crystal Displays (LCD): First introduc...
Liquid Crystal Displays (LCD): First introduced in watches and clocks in the1970's, LCDs are now used to display images in monitors. A newer technology in computer screens is
What is the benefit of Threads?, Following are some causes why we use threa...
Following are some causes why we use threads in designing operating systems. A process with several threads makes a great server for instance printer server. For the reason that t
What is the need for an intelligent website?, Problem Hanson websites a...
Problem Hanson websites are built to work for your business and are built on the concept of intelligent website. An intelligent website is more than just a brochure on the web.
Editor and assembler, Editor and Assembler: To write a program in...
Editor and Assembler: To write a program in any of the programming languages requires an editor. This is a program that is used to create text files. While saving the p
Accounting Assignment Help
Economics Assignment Help
Finance Assignment Help
Statistics Assignment Help
Physics Assignment Help
Chemistry Assignment Help
Math Assignment Help
Biology Assignment Help
English Assignment Help
Management Assignment Help
Engineering Assignment Help
Programming Assignment Help
Computer Science Assignment Help
IT Courses and Help
Why Us ?
~24x7 hrs Support
~Quality of Work
~Time on Delivery
~Privacy of Work
Human Resource Management
Literature Review Writing Help
Follow Us |
T & C
Copyright by ExpertsMind IT Educational Pvt. Ltd.