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

Explain about multidimensional features present in olap, Multidimensional s...

Multidimensional support is very necessary if we are to contain multiple hierarchies in our data analysis. Multidimensional feature permits a user to examine business and organizat

How a shift register can be used as a ring counter, Explain how a shift reg...

Explain how a shift register can be used as a ring counter giving the wave forms at the output of the flipflops. Ans: Shift Register as a Ring Counter: A Ring Counter is a

How much duration is required for an off-hook signal, An off-hook signal wi...

An off-hook signal will repeat for a/an duration. For a/an finite duration, an off-hook signal will repeat.

What are parity generator and checker, What are parity generator and checke...

What are parity generator and checker? Ans: While a digital signal is transmitted, this may not be received correctly through the receiver. At the receiving end this may o

Define the abstraction of OOA, Define the Abstraction of OOA Now, let ...

Define the Abstraction of OOA Now, let us see how objects can be seen as a problem, and find their associated data and their behaviour. You will notice that an object is an ab

Advantage of wrapping database calls into mts transactions, Advantage of wr...

Advantage of wrapping database calls into MTS transaction If database calls are complete within the context of a transaction, aborting the transaction will undo and changes that

Real-time systems, This document is intended to help students get started w...

This document is intended to help students get started with the real-time systems (RTS) assignment. We will start on the assignment together in the laboratory. Students will then c

What are the mechanisms for implementing i/o operation, What are the variou...

What are the various mechanisms for implementing I/O operations? a) Program controlled I/O b) Interrupts c) DMA

Explain the working of a two input EX-OR gate, With relevant logic diagram ...

With relevant logic diagram and truth table explain the working of a two input EX-OR gate. Ans. 2-Input EX-OR Gate: An EX-OR or Exclusive gate recognizes words that have an od

Overcoming global issues in e-commerce, E-commerce advance tremendous chanc...

E-commerce advance tremendous chance by permitting industrialist to buy Materials at a low price internationally. Also they give companies the opportunity to sell to universal stor

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages