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 ?

Access time - storage devices, Access time: Access time: This is the t...

Access time: Access time: This is the time required to locate and retrieve stored data from the storage unit in response to a program instruction. That is the time interval be

Search strategies, Search strategies are evaluated along four main dimensio...

Search strategies are evaluated along four main dimensions. Name those dimensions and briefly describe each one

Explain erlang family of distributions of service times, Question 1 Explai...

Question 1 Explain the structure of Mathematical Model in your own words Question 2 Describe Erlang family of distributions of service times Question 3 Describe the algo

Help for final project, Hello i am a computer science student. now we are g...

Hello i am a computer science student. now we are going to start our final project. we want to work on Google App Inventor and we want to create mobile application. we are two grou

Basic parts of a computers, The basic parts of a computers are shown in Fig...

The basic parts of a computers are shown in Figure.   Input devices such as a keyboard, mouse or scanner are used to enter input (data and/or instructions), directly

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.

Machines which exhibit intelligent nature, Machines which exhibit intellige...

Machines which exhibit intelligent nature Machines in this case could easily be personal computers, or they could be robots with embedded systems, or a combination of both. Wh

Designing computer based system-systems life cycle approach, Systems Life C...

Systems Life Cycle Approach Systems Analysis and Design follows a life cycle for development, as shown below. Brief discussion on this approach is given here: Figure

What is the difference between kernel mode and user mode fun, The differenc...

The difference between kernel mode and user mode gives a rudimentary form of security in the following manner. Convinced instructions could be executed only when the CPU is in kern

Define the elements of contlor unit , The three main elements of the con...

The three main elements of the control unit are: 1. Decoder this is used to decode the instructions that create a program when they are being processed, and to establish in what ac

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