Standards for scan codes, Computer Engineering

Assignment Help:

Q. Standards for scan codes ?

There are 3 standards for scan codes: Mode1 (83-key keyboard PC, PC-XT) and Mode2 (84-key AT keyboard) and Mode3 (101-key keyboard onwards). In Mode1 Make and Break codes are single bytes however different for same key. In Mode2 and Mode3 Make code is a single byte though Break code is two bytes (byte F0(Hex) + the make code).


Related Discussions:- Standards for scan codes

Illustrate about system memory-management mode, Memory - management mode ...

Memory - management mode System memory-management mode (SMM) is on the same level as protected mode, real mode and virtual mode though it is provided to function as a manager

Introduction to computers, explain classification of computers in detail.al...

explain classification of computers in detail.also explain various application areas of computers

Explain the importance of object oriented modelling, Explain the importance...

Explain the importance of Object Oriented Modelling It is important to note that wi t h the growing complexity of systems, significance of modelling techniques increases. Beca

What is status control and registers, Q. What is Status Control and Registe...

Q. What is Status Control and Registers? Status Control and Registers: These registers can't be used by programmers though are used to control CPU or execution of a program.

Show the two ways in which warnings can be suppressed in php, Show the two ...

Show the two ways in which Warnings can be suppressed in PHP? 1) Stop an individual function call from producing an error message put the @ warning suppression Operator front o

State of the register, What is the state of the register in Figure  after e...

What is the state of the register in Figure  after every clock pulse if it begins in the 101001111000 state?

Define the architectural framework for electronic commerce, Define the Arch...

Define the Architectural framework for electronic commerce. An application independent framework to categorize service interaction relies onto four fundamental dimensions a.

Why does ipv6 use separate extension headers, Why does IPV6 use separate ex...

Why does IPV6 use separate extension headers? Explain. The extension headers in Ipv6 are utilized for economy and extensibility. Partitioning the datagram functionality in sepa

What is managed bean or mbean, A managed bean - sometimes simply referred t...

A managed bean - sometimes simply referred to as an MBean - is a type of JavaBean, developed with dependency injection. Managed Beans are particularly used in the Java Management E

Differentiate concurrent and parallel executions, Differentiate concurrent ...

Differentiate concurrent and parallel executions ? The words "parallel "and "concurrent" are often used interchangeably, however they are different. Parallel execution is connec

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