Interfacing of keyboards, Computer Engineering

Assignment Help:

Q. Interfacing of keyboards?

The keyboard employs a special Input/output port which is similar to a serial port however doesn't explicitly follow the RS-232 serial port standard.  In place of multiple data and handshaking signals as in RS-232 the keyboard employs just two signals by which it manages a bi-directional interface with its own set of commands. 

Employing its elaborate handshaking mechanism keyboard and PC transmit commands and data to each other.  USB keyboards work in a different way by using USB coding and protocol.

590_Interfacing of keyboards.png


Related Discussions:- Interfacing of keyboards

What is the difference between dpi and ppi, Question : (a) "Resolution ...

Question : (a) "Resolution refers to the sharpness and clarity of an image" (i) Explain what you understand by the above statement. (ii) What is the difference between D

Solve out linear equations, Assume that you have been asked to solve proble...

Assume that you have been asked to solve problem with exact area constraints, the area error being no more than 1% for each department. What are the linear equations you would nee

Users to run programs at same time, A computer system that allows multiple ...

A computer system that allows multiple users to run programs at similar time   Multi tasking system

Keypads operation, The 16 keys (4x4 matrixes) keypads diagram is shown in f...

The 16 keys (4x4 matrixes) keypads diagram is shown in figure 4 above. Let see how the keypad is connected. Each square of the alphanumeric has to be pushed to make a switch or con

Illustrate left shift register with parallel load, Q. Illustrate Left shift...

Q. Illustrate Left shift register with parallel load? A register that shifts data in one direction only is known as Uni-directional shift register and a register that can shift

What is pipelining, What is pipelining? It is a method of decomposing a...

What is pipelining? It is a method of decomposing a sequential process into sub-operations, with each sub-process being implemented in a special dedicated segment that operates

What is the advantages for linux, What is the advantages for Linux? ...

What is the advantages for Linux? Runs on old Hardware Low-Cost Linux is fully customizable in all its components Powerful Linux runs on low-end, cheap hardware

Data Warehousing Job Scheduling, 1) Define a job scheduling strategy that w...

1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict

Explain intermediate representation, a. Explain Intermediate Representation...

a. Explain Intermediate Representation? What are the desirable properties of Intermediate Representation? b. Explain Grammar of a language. Identify the dissimilar classes of gr

Oo modelling, We might model such a scenario using three types of object: o...

We might model such a scenario using three types of object: one for Customers, one for BankAccounts and another for Transactions. In terms of data required, for Customers assume we

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