What is input - output commands, Computer Engineering

Assignment Help:

Q. What is Input - Output commands?

There are four kinds of I/O commands which an I/O interface can receive when it's addressed by a processor:

Control: This type of commands is device specific and is used to give specific instructions to device for example a magnetic tape requiring rewinding and moving forward by a block.
Test: This command checks status like if a device is ready or not or is in error condition.
Read: This command is helpful for input of data from input device.
Write: this command is employed for output of data to output device.

Related Discussions:- What is input - output commands

Advantage or disadvantage of using INADDR_ANY, What is the advantage or dis...

What is the advantage or disadvantage of using INADDR_ANY instead of the IP address of the computer running on the server? The format of TCP/IP, structure sockaddr_in defines u

Design goals of computer system, Design goals: The correct form of a c...

Design goals: The correct form of a computer system depends on the constraints and aim for which it was optimized. Computer architectures frequently trade off cost, standard

Decision table, Write a decision table that specifies the rules for the gam...

Write a decision table that specifies the rules for the game of checkers

Explain transformational analogy, Question 1 Why is it important that a...

Question 1 Why is it important that an expert system be able to explain why and how questions related to a problem solving session. 2 Give the architecture of an Expert syst

State the term availability - organisational security scheme, State the ter...

State the term Availability - organisational security scheme What data needs to be available continually, compared to data which can be "off line" for limited periods. Th

Detemine the major building blocks of uml, Detemine the major building bloc...

Detemine the major building blocks of UML UML could be used in visualizing, specifying, constructing and documenting object oriented systems. The major building blocks of UML a

Can we use flow logic control key words in abap/4, Can we use flow logic co...

Can we use flow logic control key words in ABAP/4 and vice-versa The flow control of a dynpro having os a few statements that syntactically ressemble ABAP/4 statements .Thou

What is a semaphore, What is a semaphore? Semaphore: It is a protecte...

What is a semaphore? Semaphore: It is a protected variable or abstract data type that constitutes the typical method for restricting access to shared resources as shared memo

What is pbo and pai events, What is PBO and PAI events? PBO- Process...

What is PBO and PAI events? PBO- Process before Output-It verifies the flow logic before displaying the screen. PAI- Process after Input-It verifies the flowlogic after

Data type, Define data type and abstract data type comment upon the signifi...

Define data type and abstract data type comment upon the significant of both

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages