User Account

All Pages

explain data movement ?, Basic Computer Science

Assignment Help:
In any program it is essential to move the data in the memory and in the CPU registers; there are a number of ways to do this: it can copy data in the memory to a number of register, from register to register, from a stack to a register, from a register to a stack, to transmit data to external devices in addition to vice versa.
This group of data is subject to rules and restrictions. The next are some of them:
*It is not potential to move data from a memory locality to another unswervingly; it is essential to first move the data of the origin locality to a register and then from the register to the destiny area.
*It is not possible to move a constant straight to a segment register; it first must be moved to a register in the CPU then to segment register.
It is feasible to move data blocks through the movs instructions, which copies a chain of bytes or words; movsb which copies n bytes from a region to another; and movsw copies n words from a locality to another. The last two instructions take the values from the distinct addresses by DS:SI as a set of data to move and ES:DI as the new localization of the
data.
To move data there are also structures identified batteries, where the data is introduced with the push instruction and are removed with the pop instruction.
In a stack the first data to be introduced is the last one we can take, this is, if in our program we utilize these instructions:
PUSH AX
PUSH BX
PUSH CX
To return the accurate values to each register at the moment of taking them from the stack it is essential to do it in the following sequence:
POP CX
POP BX
POP AX
For the contact with external devices the in command to read the information received from a port and the out command is used to send information to a port.
The out command’s syntax is:
OUT DX,AX
The in command’s syntax is:
IN AX,DX

Related Discussions:- explain data movement ?

CAI EXPLANATION, What is CAI? Explain its pitfalls

What is CAI? Explain its pitfalls

Computer generations, Computer Generations: From the early 1940's to t...

Computer Generations: From the early 1940's to the present, computer scientists have been able to identify clear-cut stages in the development of computer technology. With eac

Intelligent system, why Greedy search is not Optimal

why Greedy search is not Optimal

Explain acl with its types, Question 1 Discuss the two basic operational c...

Question 1 Discuss the two basic operational characteristics of RR Only an active route is redistributed Route redistribution does not impact local route selection

Line decoders, number of 4 to 16 line decoders required to get 8 lto 256 li...

number of 4 to 16 line decoders required to get 8 lto 256 line decoder

Introduction to computer, Computer: People call a lot of things, compu...

Computer: People call a lot of things, computers. Some of them are cheap, but can only process numerical information. Such devices would better be described as 'calculators' r

Write a detailed note on colour balance, Question 1 Write a long note on s...

Question 1 Write a long note on setting up a typical on-location News Interview Question  2 Write a long note on how to work with presenters Question 3 Write long notes

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

Outdoor patient department features - receptionist module, Outdoor Patient...

Outdoor Patient Department (OPD) Features The following modules can be developed for various areas and workers. A receptionist Module Receptionist updates all bas

Transmission media, TRANSMISSION MEDIA: When we speak of transmission ...

TRANSMISSION MEDIA: When we speak of transmission media, we usually mean a mix of physical lines ranging from wire pairs to cable, and over the air transmission media, such as

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