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The Input Output System
The input output system provides the physical connection between the equipment and the PLC there are many different kinds of I/O cards which serve to condition the type of input or output so the CPU can use if for its logic. This simply a matter of determining what inputs and outputs are needed, filing the rack with the appropriate cards then addressing them correctly in the CPU program.
Define HRQ? The hold demand output requests the access of the system bus. In non- cascaded 8257 systems, this is linked with HOLD pin of CPU. In cascade mode, this pin of a sla
Q. A shift register can be used as a binary (a) divide by-2, and (b) multiply-by-2 counter. Explain. Show a block diagram of a 4-bit shift-right register using JKFFs.
Q. Working of On - off hook circuit in telephone hand set? On/off hook circuit (sometimes termed as a switch hook) is nothing more than a simple single-throw, double-pole (STDP
a. Enlist the benefits and drawbacks of in band and out band voice signalling? b. Describe Channel Associated mode, Channel Non-Associated mode and QuasiAssociated mode of commo
Among copper and mercury which is better conductor of electricity?
Q. Description of clauses used in a parallel construct? When a thread comes across a parallel construct a set of new threads is made to execute parallel region. Inside the para
Q. What is meant by Thermal Runaway? Explain with reference to a transistor.How is it avoided in circuits? The collector current of a transistor increases with increasing tempe
The goal of this project is to model a system and to design a controller for the system so that the closed-loop system performs satisfactorily.
Q. Show Power and Power Factor in ac Circuits? Power is the rate of change of energy with respect to time. The unit of power is a watt (W), which is a joule per second (J/s). T
We would like you to do an indepth study/research in the tradeoff between the filtering of the QR and the QR performance So it will be about filtering but more of an indepth for
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