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

Name the four steps in pipelining, Name the four steps in pipelining. F...

Name the four steps in pipelining. Fetch : Read the instruction from the memory. Decode : Decode the instruction and get the source operand. Execute : Perform the operat

Layered architecture.., advantages and disadvantages of layered architectur...

advantages and disadvantages of layered architecture in computer network.

State the disadvantages of interviewing, State the Disadvantages of inter...

State the Disadvantages of interviewing - can be expensive to carry out - can be a very time consuming exercise - Unable to remain anonymous

Mac address helps in which access control, MAC address helps in (A) m...

MAC address helps in (A) multimedia access control. (B) media access control. (C) mobile access control. (D) master access point control Ans: MAC addr

List factors that determine the storage device performance, List the factor...

List the factors that determine the storage device performance. i.Access time ii.Cycle time iii.Transfer Rate.

What is dvd and dvd-rom, DVD is a new technology very same to compact discs...

DVD is a new technology very same to compact discs. A DVD looks just like an ordinary compact disc, though a DVD can hold up to 25 times as much as a CD!! That's 18 gigabytes!! Thi

Define multiprogramming, Define Multiprogramming. Multiprogramming: ...

Define Multiprogramming. Multiprogramming: A multiprogramming operating system is system which allows extra than one active user program or part of user program to be store

Does weblogic jms support clustering, WebLogic JMS handles cluster-wide, tr...

WebLogic JMS handles cluster-wide, transparent access to destinations from any server in the cluster. A system administrator can set up cluster-wide, transparent access to destinat

Keys, why impotant keys

why impotant keys

Python, When investing money, an important concept to know is compound inte...

When investing money, an important concept to know is compound interest. The equation FV = PV (1+rate)periods . This relates the following four quantities. The present value (PV)

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages