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

Physics, what is fresnel''s biprism?how it is used to determine wavelength ...

what is fresnel''s biprism?how it is used to determine wavelength of monochromatic source of light

What is sdram, Synchronous dynamic random access memory (SDRAM) is dynamic ...

Synchronous dynamic random access memory (SDRAM) is dynamic random access memory (DRAM) that is initialized with the system bus. Classic DRAM has an asynchronous interface, which m

Sql requirements in the sap development system, Which interface converts SQ...

Which interface converts SQL requirements in the SAP development system to those of the database? Database Interface converts SQL in the SAP.

Automatic stock control system in a supermarket, Automatic Stock Control Sy...

Automatic Stock Control System in a Supermarket -  Bar codes are associated to all goods/items sold by the supermarket as a means of identification -  Every bar code is asso

Explain the application of e-commerce in home banking, Explain the applicat...

Explain the application of E-Commerce in Home Banking. Home Banking: E-commerce is employed in Home Banking like one call or one click. Internet banking or online bank

Color scheme in a repeater control, How can you provide an alternating colo...

How can you provide an alternating color scheme in a Repeater control?  AlternatingItemTemplate Like the ItemTemplate element, but rendered for every otherrow (alternating item

Units of artificial neural networks, Units of artificial neural networks: ...

Units of artificial neural networks: However the input units simply output the value that was input to them from the example to be propagated. So every other unit in a network

Compact disc - computer storage, Compact Disc; Compact Disc ( CD)   i...

Compact Disc; Compact Disc ( CD)   is an optical disc  which is used to  store digital data. It was initially developed to store sound recordings completely, but later it als

Representation in prolog - logic programs, Representation in Prolog - Logic...

Representation in Prolog - Logic Programs: If we justimpose some additional constraints on first-order logic, so than we get to a representation language knowing as logic prog

Telnet services, java program for implementation of telnet services

java program for implementation of telnet services

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