VU VICKY Virtual University Assignment Solution, Past Papers, Handouts and other material

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PAPER 1:

5 marks

Draw circuit diagram of binary weighted inputs convertor

Draw block diagram od cascading decade counter 74hc160

Write test vector of 3 bit up down counter

Timing diagram of frequency dividor. We have to make the waveform of the final output

Other short questions:

Characteristics of serial in serial out shift register

3 guidelines of state assignment

2 applcations of ROM

Why certain counters like 74hc160 is called pre-set counters

How many bits a flip flop can save.

Purpose of stop bits and start bit

Which is the normal mode of operation of PROM (exactly yehi question statement tha confusing sa)

A circuit has 2 flip flops. What will be the power dissipation of the whole circuit is 5 volts and 5 mA current is applied to it. (I wrote 50mW. As for each flip flop its 25mW so 25+25 = 50..not sure)

PAPER 2:

QNO1:    Analyze the following timing dagiram and tell which counter is being depicted by the diagram.

QNO2:   give three guidelines for the selection of state assignment?

QNO3:  what does the statement given below (using PLD programming) mean? “YPIN23 ISTYPE.’com’”

QNO4: draw a diagram of a 3 bit-up-down counter. Use an external inputX; when X sets to logic 1, the counter downward otherwise countup wards.

QNO5: what is meant by state assignment?

QNO6: on the fifth  clock pluse a 4 bit jhonson sequence is Q0=0, Q1=1, Q2=1, Q3=1. What will be the sequence after sixth clock pluse.

Assume Q3 represent the least significant.

QNO7: what is the minimum sample frequency if the highest frequency component in analog signalis 20KHZ?

QNO8: what is meant by stop time and hold time of a flip flop?

Paper 3:

CS302 Final Term Paper  2 Marks Question: 1. In ABEL, an Input (source) file contains the module which has three sections. Name any two. 2. Write down two functions of registers. 3. Suppose a 2-bit up-counter, having states, “A, B, C, D”. Write down GOTO statements to show how present states change to next states. 4. Missing code is one of the Analog-to-Digital converters errors. Name other two types of errors. 3 Marks Question: 5. Convert the decimal 5846 number to octal using repeated division method, write down all steps. 6. Write down three characteristics of serial in/serial out 4-bit right shift register. 7. Draw a circuit diagram of flip-flop based static memory cell. 8. Draw the circuit diagram of operational amplifier used as an inverting amplifier. 5 Marks Question: 9. Convert the following numbers into its equivalent decimal number with complete procedure 1101101.1011. 10. Consider a state sequence a,f,d,c,a,b,c,f,d,c. Starting from initial state “a”. draw a table for the inputs and outputs for the state diagram given below. 11. Mealy Machine Per Tha. State Table 12. Draw the circuit diagram of binary-weighted-input digital to analog converter.

a