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

Open source software, Open Source Software: Open Source Software (OSS)...

Open Source Software: Open Source Software (OSS) is software that comes with source code, and importantly also provides rights (typically reserved for copyright holders) to st

Eeprom, Ask queswhat is the advanages of eeprom?

Ask queswhat is the advanages of eeprom?

Homework, #questioPurpose of this assignment: 1. Using dictionaries. Assign...

#questioPurpose of this assignment: 1. Using dictionaries. Assignment: Write a program to read a text file and create a dictionary. The keys for the dictionary should be all

Socket, socket programming

socket programming

C programming, hello do have c programming experts

hello do have c programming experts

Explanation of different graphics applications, Problem 1 What are grap...

Problem 1 What are graphic applications? Explanation of different graphics applications Problem 2 Open the case cover of your CPU of your computer system and l

Chat, Chat: The word chat in English language means - casual conversat...

Chat: The word chat in English language means - casual conversation. On Internet it means the same, except that you need to use text and your keyboard skills are tested. Earli

Learn, The technique to mix C and assembly language is to apply the "asm" d...

The technique to mix C and assembly language is to apply the "asm" directive. To access C-language variables from assembly language, you just use the C identifier that name is a me

Explain the working of bus connection, Question 1 Explain the working of B...

Question 1 Explain the working of Bus connection Question 2 Write a note on: Robotics and Voice Recognition Question 3 Describe the construction of CD-ROM Question 4

About the faculty posts, is there any oppurtunity for a mca to teach mcasub...

is there any oppurtunity for a mca to teach mcasubjects online

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