What is input - output interface, Computer Engineering

Assignment Help:

The I/O interface provides a technique for transferring information between external I/O devices and internal storage. Peripherals linked to a computer require special communication links for interfacing them with CPU. Objective of communication link is to resolve differences which exist between central computer and every peripheral. The key differences are:

  • Peripherals are electromechanical and electromagnetic devices as well as their operations are different from operation of CPU and memory which are electronic devices.
  • Data transfer rate of peripherals is generally slower than transfer rate of CPU and thus a synchronization mechanism may be required.
  • Data codes and formats in peripherals differ from word format in CPU and memory.
  • Operating modes of peripherals are dissimilar from one another and each one should be controlled so as not to disturb operation of other peripherals associated to CPU.

To resolve these differences, computer systems include special hardware component between the CPU and peripherals to supervise and synchronize all input and output transfers. These components are called interface units because they interface between the processor bus and the peripheral device.


Related Discussions:- What is input - output interface

Automated injection, There are tools to automate the process of SQL Injecti...

There are tools to automate the process of SQL Injection into login and other fields. One hacker process, using a one tool, will be to search out a number of weak targets using Goo

Set up the minunit test framework - mortgage code, Set up the minunit test ...

Set up the minunit test framework examples in your environment (i.e. build or compile the code). Once you can run the example, use the minunit test framework to create and run a bo

Minimum possibility -minimax algorithm, Minimum possibility -minimax algori...

Minimum possibility -minimax algorithm: Finally, we want to put the scores on the top edges in the tree. So there is over again a choice. Whenever, in this case, we have to r

What is the most common biometrics, What is the most common biometrics? ...

What is the most common biometrics? The most common biometrics is the given below: Face geometry (Photo): In this the computer takes the picture of your face and matches t

What is random access memory, What is Random access memory (RAM) This i...

What is Random access memory (RAM) This is a volatile memory (i.e. contents are lost when computer is switched off). A user can write or delete data and read the contents. Befo

Perceptrons in artificial neural network, Perceptrons in artificial neural ...

Perceptrons in artificial neural network- Artificial intelligence: The weights in any ANN are always only real numbers and the learning problem boils down to selecting the best

Why disable statements are not allowed in functions, Why disable statements...

Why disable statements are not allowed in functions? If  disble  statement  is used  in function,it  invalids  function  and  its  return  value.  So  disable statements aren't

What are the major functions of io system, What are the major functions of ...

What are the major functions of IO system?  i. Interface to the CPU and memory by the system bus.  ii. Interface to one or more IO devices by tailored data link.

What is internet routing hierarchy, Q. What is Internet Routing Hierarchy? ...

Q. What is Internet Routing Hierarchy? So how do packets find their way across Internet? Does every computer connected to Internet know where other computers are? Do packets ba

What is jmx architecture, JMX is based on a 3-level architecture:   ?...

JMX is based on a 3-level architecture:   ? The Probe level have the probes (known as MBeans) instrumenting the resources. Also known as the Instrumentation level. ? The A

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