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

What is asp.net authentication providers and iis security, What is ASP.NET ...

What is ASP.NET Authentication Providers and IIS Security? ASP.NET implements authentication using authentication providers, which are code modules that verify credentials and

What is the use of buffer register, What is the use of buffer register? ...

What is the use of buffer register? The buffer register is used to avoid speed mismatch among the I/O device and the processor.

Illustrate domain name system, Q. Illustrate Domain Name System? Domain...

Q. Illustrate Domain Name System? Domain name is a name which is given to a network for ease of reference. Domain refers to a group of computers which are known by a single com

Find out the decimal equivalent of binary number, The decimal equivalent of...

The decimal equivalent of Binary number 10101 is ? Ans. 1x2 4 + 0x2 3 +1x2 2 +0x2 1 + 1x2 0 = 16 + 0 + 4 + 0 + 1 = 21.

What is asynchronous transmission, What is asynchronous transmission An...

What is asynchronous transmission An asynchronous transmission technique used in many interactive terminals employ special bits. With this method each character consists of thr

Show sample instruction format of mips instruction, Q. Show Sample Instruct...

Q. Show Sample Instruction Format of MIPS instruction? Early MIPS architectures had 32-bit instructions and later versions have 64-bit implementations. The first commercial

Problem solving in parallel-, Problem Solving In Parallel Introduction ...

Problem Solving In Parallel Introduction to Parallel Computing This section examines how a particular task can be broken into minor subtasks and how subtasks can be answer i

Convert the given S-R flipflop to a D-flip flop., Convert the given S-R fli...

Convert the given S-R flipflop to a D-flip flop. Ans: The Truth Table for S-R Flip-Flop is illustrated in Fig.(a) and truth table of D Flip-Flop is illustrated in Fig.(b)

Integrating virtual memory, Integrating Virtual Memory, TLBs, and Caches - ...

Integrating Virtual Memory, TLBs, and Caches - computer architecture:   There are 3 types of misses: 1. a cache miss 2. TLB miss 3. a page fault 2 techniqu

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