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

Project cost, I need help in my M.Sc project ,but im wondering how the cost...

I need help in my M.Sc project ,but im wondering how the cost is calculated

What is a multiple line field, What is a multiple line field? A multipl...

What is a multiple line field? A multiple line field is a special part of field which allows the user to enter multiple lines of data into it.

Explain busy tone in strowger telephony, Explain Busy tone in strowger tele...

Explain Busy tone in strowger telephony. Busy tone pattern is demonstrated in figure. This is a bursty 400 Hz signal with silence era in between. The burst and silence durati

What is micro programmed control, What is micro programmed control? Mic...

What is micro programmed control? Micro programmed control is a scheme in which control signals are formed by a program same to machine language program.

Determine flip-flops that are required for mod–16 counter, How many Flip-Fl...

How many Flip-Flops are required for mod-16 counter? Ans. 4 flip-flops is required for Mod-16 Counter. For Mod-m Counter, we require N flip-flops where N is selected to be the

Difference between the std and class module in vb, Std Global within the p...

Std Global within the project.  Class Global throughout the all project only thing is we require to set the type lib. Class Modules can be Instantiated.

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

Operations of the web, Operations of the Web mainly depend on hypertext as ...

Operations of the Web mainly depend on hypertext as its means of interacting with users. But what is hypertext? Hypertext as such is the same as regular text that is it can be read

Path & Path Production, Take the following flow graph and use the procedure...

Take the following flow graph and use the procedure in chapter 8 to derive an equivalent regular expression. Show all intermediate graphs (to ensure that you follow the procedure,

Explain disk cartridges, Q. Explain Disk Cartridges ? Disk Cartridges:...

Q. Explain Disk Cartridges ? Disk Cartridges: Removable disk cartridges are an option to hard disk units as a form of secondary storage. Cartridge generally comprises one or

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