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

Determine the input and output devices, I/O devices need to be matched up t...

I/O devices need to be matched up to computer application. - Computer-aided design (graph plotters, large screens, etc.) - Virtual reality (data gloves, data goggles, etc.)

Define the key features of hop field neural networks, a. Define the Key fea...

a. Define the Key features of Hop field Neural Networks. b. Compare and contrast among Neural Networks and Expert systems in terms of knowledge representation, acquisition and e

Hardness of water, primlncipal of edtamethod

primlncipal of edtamethod

Define nondeterministic tm, Define nondeterministic TM? Arbitraril...

Define nondeterministic TM? Arbitrarily chooses move when more than one possibility exists Accepts if there is at least one computation that terminates in an acceptin

Define the term grade of service, Define the term Grade of Service. Gr...

Define the term Grade of Service. Grade of Service: In loss systems, the traffic carried through the network is usually lower than the actual traffic offered to the network t

Capacity and access speed of hard disk, Capacity and access speed: PC ...

Capacity and access speed: PC hard disk drive capacity (measured in GB). The vertical axis is logarithmic, so the accurate line corresponds to exponential growth. By using

Reprographic methods for information distribution, Reprographic Methods ...

Reprographic Methods i) Thermography ii) Dyeline jii) Microfiche iv) Fax In this unit you have learnt that: Used for Methods of reprography are used for the

Advantages offered by data mining, Advantages offered by Data Mining: 1...

Advantages offered by Data Mining: 1. Facilitates discovery of knowledge from big, massive data sets. 2. Can be used within dissimilar application areas by Fraud detection

Define buffering, Define buffering. A buffer is a memory area that kee...

Define buffering. A buffer is a memory area that keeps data while they are transferred among two devices or among a device and an application. Buffering is done for three reas

Constant voltage sources, Constant Voltage Sources An ideal constant v...

Constant Voltage Sources An ideal constant voltage source maintains a given voltage across its load regardless of the current drawn from it .Most 'every-day' power supplies a

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages