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Q. Explain crossbar exchange, with all call processing steps and diagrams. Ans: The basic concept of crossbar switching is to provide a matrix of n x m sets of contacts with
Q. Draw the circuit of a 7805 voltage regulator? Explain the functions of the capacitors used at its input and output sides. Functions of capacitors used at input and outp
What is memory mapping? The assignment of memory addresses to several registers in a memory chip is known as memory mapping.
Q. Show Common signal-processing operations? Common signal-processing operations include the following: • Amplification to compensate for attenuation • Filtering to reduc
State the Advantages of expert systems - Never "forgets" to ask a question in determining the logic - provides consistent answers - Less skilled work force needed, ther
Q. A BJT is biased by the method shown in Figure. If V BEQ = 0.7V, β = 100, V CEQ = 10 V, and I CQ = 5 mA, find I 1 , I 2 , and IEQ.
What is the size of ports in 8255? Port-A : 8-bits Port-CU : 4-bits Port-B : 8-bits Port-CL : 4-bits
Compare with memory The contents of the memory of the memory location pointed by HL register pair are compared with the contents of the accumulator. The instruction f
Determine currents in the circuits: Determine currents I 1 and I 2 in the given circuits by applying KVL. Solution We apply KVL for first loop : 10 = 1 I 1 + 1
Operation - unijunction transistor: Operation : Imagine that the emitter supply voltage is turned biased and a small emitter reverse current flows. Then the intrinsic stand
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