Explain keyboard input and video output, Computer Engineering

Assignment Help:

Q. Explain Keyboard Input and Video output ?

A Keystroke read from keyboard is termed as a console input and a character displayed on the video screen is known as a console output. In assembly language reading and displaying character is most tiresome to program. Though these tasks were greatly simplified by convenient architecture of 8086/8088. Thatarchitecture offers for a pack of software interrupt vectors starting at address 0000:0000.

The benefits of this type of call is that it appears static to a programmer however flexible to a system design engineer. For illustration INT 00H is a special system level vector which points to the 'recovery from division by zero' subroutine. If new designer come and want to move interrupt location in memory it adjusts entry in the IVT vector of interrupt 00H to a new location. So from the system programmer point of view it's relatively easy to change vectors under program control.


Related Discussions:- Explain keyboard input and video output

C programming, At a shop of marbles, packs of marbles are prepared. Packets...

At a shop of marbles, packs of marbles are prepared. Packets are named A, B, C, D, E …….. All packets are kept in a VERTICAL SHELF in random order. Any numbers of packets with thes

The information on the current screen, How do you find the information on t...

How do you find the information on the current screen? The information on the present screen can be found by SYSTEM ? STATUS command from any menu.

Recent parallel programming models, A model for parallel programming is an ...

A model for parallel programming is an abstraction in addition its machine architecture is independent. A model is able to be implemented on different hardware and memory architect

Design odd-even transposition algorithm, Q. Design Odd-Even Transposition A...

Q. Design Odd-Even Transposition Algorithm? Algorithm: Odd-Even Transposition for I=1 to N     {            If (I%2 != 0) //i.e. Odd phase            {

Determine the decimal equivalent of binary 1100 ?, The decimal equivalent o...

The decimal equivalent of (1100) 2   is ? Ans. (1100) 2 = (12) 10

Interconnection network, Interconnection Network Introduction Th...

Interconnection Network Introduction This unit discusses the types and properties of interconnection networks.  In multiprocessor systems, there are multiple I/O modules

First order predicate logic - artificial intelligence, First Order Predicat...

First Order Predicate Logic : This is a more expressive logic because it is mostly builds on propositional logic by allowing us to needs as constants, variables, predicates,

the email interface to submit/change bugs via email, You can search an upd...

You can search an updated README.mailif file in the contrib/ directory of your Bugzilla distribution that walks you by the setup.

Find out the excess code of decimal number, The excess 3 code of decimal nu...

The excess 3 code of decimal number 26 is ? Ans. (26) 10 in BCD is (00100110) BCD Add 011 to all BCD 01011001 for excess - 3

Power and energy, Ask questiPower and EnergyQuestion 4Consider a processor ...

Ask questiPower and EnergyQuestion 4Consider a processor that runs at 2.5 GHz and 1 Volt. When running a given CPU-bound program,the processor consumes 100 W, of which 20 W is leak

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