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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.
In SDK – 86 kit 128KB SRAM and 64KB EPROM is provided on system and provision for expansion of another 128KB SRAM is given. The on system SRAM address starts from 00000H and that
The logic circuit shown in the given figure can be minimised to Ans. The minimised figure of logic diagram is D, the output of the logic circuit is as Y=(X+Y')'+(X'+(X+
One of the very useful things about Internet is that it enables almost instantly exchange of electronic message (e-mail) across the worlds. E-mail is a standard as well as popular
Important points of simulations In this simulation it is essential to consider: (1) What and how data is gathered (2) How simulation is done (3) How system would wo
Write down the general model for the translation process. For the translation process the general model can be represented as given here:
What are the difference between heap and stack? The Stack is more or less responsible for maintaining track of what's executing into our code or what's been "called". The Heap
What are coupling and cohesion and why are they important concepts in software design?
What is write-back or copy-back protocol? For a write operation using this protocol during write-hit: the method is to update only the cache and to mark it as updated with an a
Define about classes of object oriented modelling A class is a collection of things, or concepts that have the same properties. Each of these concepts or things is known an obj
Steps in Building the Structure Chart 1. Recognize top level modules and decompose them into lower levels 2. Add control connections 3. Add couples 4. Review and revis
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