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

Explain about algebraic simplification, Q. Explain about Algebraic Simplifi...

Q. Explain about Algebraic Simplification? We have already determined algebraic simplification of logic circuit. An algebraic expression can exist in SOP or POS forms.  Let's i

Discuss the advantages of expression tree, Discuss its advantages over the ...

Discuss its advantages over the other evaluation techniques. The expression tree is determined by using a post-order traversal of the expression tree as given here: 1. If such

What are the advantagesof fact finding, What are the Advantagesof fact find...

What are the Advantagesof fact finding - Analyst obtains reliable data - It's possible to see exactly what is being done -  This is an inexpensive method in comparison o

What is the importance of hierarchy of operators, Bring out the importance ...

Bring out the importance of hierarchy of operators?  The operators  within  C are grouped  hierarchically according to their precedence(i.e., order of evaluation). Operations w

C#, I have assignment about writing code in c# language this code to contro...

I have assignment about writing code in c# language this code to control the leds in the circuit board ..any idea

Number of addresses in an instruction, Generally the Instruction Set Archit...

Generally the Instruction Set Architecture (ISA) of a processor can be distinguished using five categories:  Operand Storage in the CPU - Where are the operands kept other t

Adding server-side include to the page, Step 1: Click on the icon in the ob...

Step 1: Click on the icon in the object tool bar Or Insert -> SSI Step 2: Select the file Step 3: Add the file Step 4: Provide the URL (where to be attached) Step

Rational number expression evaluator, Develop a RPN rational number express...

Develop a RPN rational number expression evaluator (REEval). The learning objectives are: improved procedural programming skills improved confidence in designing and

Illustrate design of combinational circuits, The digital circuits that we u...

The digital circuits that we use now-a-days are constructed with NOR or NAND gates in place of AND-OR-NOT gates. NOR & NAND gates are known as Universal Gates as we can realize any

Which important terminal required between dte and pstn, An important termin...

An important terminal that is required between DTE and PSTN is (A)  Server                                      (B) MODEM (C)  Relay

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