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Describe 74LS139 memory decoder.
The 74LS139 is a dual 2-to-4 line decoder. This contains two separate 2-to-4 line decoders - all with its address, output and enable connections.
The Pin-out of the 74LS139
Q A point charge Q 1 =-5 nC is located at (6, 0, 0). Compute the voltage v ba between two points a(1, 0, 0) and b(5, 0, 0). Comment on whether point a is at a higher potential wi
Design a low noise amplifier using an Infineon RF transistor BFP640. The amplifier is to be used to amplify the L2 GPS signal and so the centre frequency is 1227MHz and bandwidth 4
What is Key bouncing? Mechanical switches are used as keys in lots of the keyboards. When a key is pressed the contact bounce back and forth and settle down only after a littl
Q A handbook lists the 60-Hz resistance at 50°C of a 900-kcmil aluminumconductor as 0.1185/mile. If four such conductors are used in parallel to form a line, determine the 60-Hz r
Suppose that the length of a 10Base-5 cable is 2500 metres. If the speed of propagation in a thick co-axial cable is 60% of the speed of light, how long does it take for a bit to
Develop and execute a program to analyze the circuit shown in Figure (a), and use PROBE for plotting v C (t).
Explain Total internal reflection? The refractive index of a medium is defined as the ratio of velocity of light in vacuum to the velocity of light in that medium n x = C/V
explain the operation of a detector probe
What is basic requirement of semiconductor laser? Draw its label diagram and explain its working with necessary theory. Write down the applications of semiconductor laser.
In n type semi conductor added impurity is (A) Pentavalent. (B) Divalent. (C) Tetravalent. (D) Trivalent.
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