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 floating-executive model, Q. Explain about Floating-Executive...

Q. Explain about Floating-Executive model? Floating-Executive model: The master-slave kernel model is too restrictive in sense that only one of processors viz designated master

Explain the storage class extern, Explain The Storage Class extern The...

Explain The Storage Class extern The Storage Class extern : One method of transmitting information across blocks and functions is to use external variables. When a variable is

Determine about the pick device, Determine about the Pick Device Light ...

Determine about the Pick Device Light Pens The light pen used to select screen positions by detecting the light coming from points on the CRT screen. These are sensitive to

The complexity of adding two matrices, T he complexity of adding two matric...

T he complexity of adding two matrices of order m*n is mn

Hard and soft real time systems, Q. Hard and Soft Real Time Systems? ...

Q. Hard and Soft Real Time Systems? Hard Real Time Systems that guarantee critical tasks are completed on time. Soft Real Time Systems that are less restrictive type o

Explain list directive in assembly language, Q. Explain list directive in a...

Q. Explain list directive in assembly language? A list directive causes assembler to generate an annotated listing on printer, video screen, disk drive or any combination of th

Fuzzy logic - artificial intelligence, Fuzzy set theory provides a means fo...

Fuzzy set theory provides a means for modeling the kind of uncertainty associated with vagueness, with imprecision, and/or with a lack of information regarding a particular element

Elements of information super highway infrastructure, Illustrate the elemen...

Illustrate the elements of Information Super Highway Infrastructure. The Information Superhighway is more than the Internet. This is a series of elements, including the collect

Advantages and disadvantages of mealy - moore state machine, What are the a...

What are the advantages and disadvantages of Mealy and Moore state machine? Advantage and Disadvantage of Mealy and Moore state machine: In Mealy as the output variable is a

Define various types of shift registers, What are various types of Shi...

What are various types of Shift Registers ? Ans: Kinds of Shift Registers: (i) SISO that is Serial-In Serial-Out Shift Register (ii) SIPO that is Serial-In P

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages