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Microprocessors:
We have learnt 8085 family of microprocessors. Initially, we understand basic components of a computer, 8085 microprocessor architecture and assembly language programming. Then we understand microprocessor I/O and LSI Counters. Specifically we have discussed regarding 8255 PPI and 8253 PIT. ADC and DAC are discussed for and analog and digital interfacing. For serial data communications we have learnt the RS232C standards. Then 2051 Microcontroller is studied to understand the concepts of Microcontroller and how to program them. At last recent trends in microprocessor technology such as 8086, 80286, 80386 and Digital Signal Processors have been investigated.
Q. What is Digital system components? The reason that digital systems are so inexpensive and yet so powerful is that they consist of very large numbers of just a few building
Q. Explain the working of a photo - transistor with a sketch A second optoelectronic device that conducts current when exposed to light is the PHOTOTRANSISTOR. A phototransisto
What is the function of gate signal in 8254 timer? The 8254 has three independent 16-bit counters, which can be programmed to. Work in any one of possible six modes. Every cou
Diffusion Current : The carrier currents are also due to concentration gradients in the doped material which lead to diffusion of carriers from high concentration region to l
Q. What is meant by biasing transistor? The purpose of dc biasing of transistor is to obtain a certain dc collector current at a certain dc collector voltage. These values of c
Q. The input to the differentiator circuit is a sinusoidal voltage of peak value 5mv and frequency 1kHZ. find out the output if R=100K and C=10^-6F Solution. The equation
12. A capacitor is to be constructed so that its capacitance is 0.2µF and to take a p.d. of 1.25kV across its terminals. The dielectric is to be mica which, after allowing a safety
What is RXD? RXD- Receive Data Input This input pin of 8251A gets a composite stream of the data to be received by 8251A.
Q. Explain stages of attending to Rail fracture? Various stages of attending to Rail fracture / weld failure in a L.W.R. track in field - Equipment required - i) Special
Working and block diagram
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