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

Moral and ethical implications, • Moral and Ethical Implications o Will ...

• Moral and Ethical Implications o Will this be safe to have on the road    Will the computers on board be able to handle extreme circumstances • Hazardous conditions o Ex

Explain clone process, Explain Clone process. A clone process is genera...

Explain Clone process. A clone process is generated using primitive type clone by duplicating its parent process. However unlike traditional processes it might be share its con

Design tables in html, In this portion you would see how to put tables in y...

In this portion you would see how to put tables in your web documents. It isn't that a table is simply a combination of rows and columns. If you have ever seen any table in an attr

binary division program for signed integer, The program division.c is avai...

The program division.c is available for download as part of this assignment. It is a binary division program which works for signed integers. It contains a function, div32, which d

Explain the working of bcd adder, Explain the working of BCD adder One ...

Explain the working of BCD adder One of the ways of adding decimal numbers in BCD is to use a 4-bit binary adder and perform arithmetic operation one digit at a time. The low-o

Differentiate between absolute and relative poverty, Question 1: Using ...

Question 1: Using appropriate diagrams, describe the optimal provision of a private good and a public good. Question 2: Using appropriate diagram, show how there is an

What is the principle of locality, What is "the principle of locality"? ...

What is "the principle of locality"? It's the nature of the processes that they refer only to the small subset of the total data space of the process. I.e. the process frequ

Explain the power dissipation characteristics for digital ic, Explain the ...

Explain the Power Dissipation characteristics for digital IC's. Ans. Power Dissipation: - It is amount of power dissipated in a digital IC. This is determined through

Estimate the circuit switched network, a) Total available bandwidth = 1 Mbp...

a) Total available bandwidth = 1 Mbps = 1000 Kbps Each user requires send data at the rate of = 500 kbps As it is circuit switched network we have to dedicate the bandwidth So the

Scanning tips, Don't scan at more resolution than needed. This saves both D...

Don't scan at more resolution than needed. This saves both Disk and time Space. Typically itisn't useful to scan at more than optical resolution because it adds no new informa

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