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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.
Q. Explain working of Counters? A counter is a register that goes through a predetermined sequence of states when clock pulse is applied. In principle value of counters is incr
Program: A good illustration of code conversion: Write a program to convert a; 4-digit BCD number into its binary equivalent. BCD number is stored as a; word in memory location kno
Q. Displaying the List of Files with DIR? You can display the list of files kept in a diskette or hard disk with the DIR commend. This Commends list files and sub directories i
What is sector sparing? Low-level formatting also sets aside spare sectors not visible to the operating system. The controller can be told to change each bad sector logically w
What are the necessary elements of an e-banking site? E-banking systems rely upon a number of common elements or processes. The given list comprises many of the potential elem
What are the Objectives of UML trace development of UML; recognize and describe notations for object modelling using UML; describe a variety of structural and be
With neat diagrams explains the configuration of a step-by-step switching system. The schematic diagram for an exchange is specified in figure. Each subscriber is associated to
please suggest me ,how to write microopertions,and study for computer architecture
Your shell must accept the exit command. This command will be in the form: e x i t When you encounter this command, your shell should terminate. Please note that when you
Q. Illustrate working of Synchronous Counters? The main drawback of ripple counter is delay in changing the value. How? To understand this let's take a case when state of rippl
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