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

Electrically erasable programmable read only memory- EEPROM, Electrically e...

Electrically erasable programmable read only memory (EEPROM) An EEPROM is a special type of PROM which can be erased by exposing it to an electrical charge. Like other kinds of

What is process control block, What is process control block?  Each pro...

What is process control block?  Each process is shown in the OS by a process control block. It having many pieces of information associated with a specific process.

Find minimum number of resource so that no deadlock arise, An operating sys...

An operating system contains 3 user processes each requiring 2 units of resource R. The minimum number of units of R such that no deadlocks will ever arise is? Ans. The minimum

Quiz help, which two class die class contain in computer programing.

which two class die class contain in computer programing.

State the use of erasable programmable read only memory, Erasable programma...

Erasable programmable read only memory (EPROM) This is a special type of PROM which can be erased by exposing it to ultraviolet (UV) light. Once it has been erased, it can be r

Define rules for evaluating the boolean expression, Define Rules For Evalua...

Define Rules For Evaluating the Boolean Expression? Generally, the following rules must always be followed when evaluating the Boolean expression: Primary, perform all in

First in first out method, The First In First Out method assumes items of s...

The First In First Out method assumes items of stocks are issued in the same order as they are received. Thus the goods received first are assumed to be the first to be issued .Any

Determine the registers are available in machines, Determine the registers ...

Determine the registers are available in machines Typical registers, some of which are commonly available in machines. These registers are as follows:- Memory Addres

Matlab, 33.A juice company manufactures one-gallon bottles of three types o...

33.A juice company manufactures one-gallon bottles of three types of juice blends using orange, pineapple, and mango juice. The blends have the following compositions: 1 gallon or

Briefly explain about ask, Question 1 What is modulation? Explain why i...

Question 1 What is modulation? Explain why is modulation required? 2 Briefly explain about ASK, FSK and PSK 3 Explain about the Nyquist Bandwidth and Nyquist Theorem 4

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd