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www entrance exam net AU Distance Educ ... ces Digital Circuit Sample Paper 3 pdf

Size: 47 Kb Pages: 2 Date: 2012-06-22
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www entrance exam net AU Distance Education BCA Degree Exam Electronic Devices Digital Circuit Sample Paper 3 pdf
www entrance exam net AU Distance Education BCA Degree exam Electronic Devices Digital Circuit Sample Paper 3 pdf

Explain with gate symbol. (10) 3. (a) Explain the function of Full Adder circuit. (10) (b) State and prove Demorgan’s law with truth tables. (10) 4. (a) Simplify the function : F ( x, y, z ) = ∑ (0, 1, 3, 6, 7) . (10) (b) Using Demorgan’s theorem, show that : (i) ( A + B )′ ( A ′ + B ′) = 0 (ii) A + A ′B + A ′B ′ = 1 . (a) Define Flip-flop. (10) 6.

Size: 47 Kb Pages: 2 Date: 2012-06-22

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www entrance exam net AU Distance Education BCA Degree Exam Electronic Devices Digital Circuit Sample Paper 9 pdf
www entrance exam net AU Distance Education BCA Degree exam Electronic Devices Digital Circuit Sample Paper 9 pdf

(a) What is meant by an Overflow? Is it a Software problem or hardware problem? (10) (b) State and prove De Morgan’s theorems. (10) 3. (a) What are the applications of Boolean Algebra. (10) (b) How does OR addition differ from the ordinary addition method? (10) 4. (a) ( ) Implement Y = AB + A + B + C using NAND gates only. (10) 5. (a) What is a Flip-Flop? What is its function?

Size: 45 Kb Pages: 2 Date: 2012-06-26

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www entrance exam net AU Distance Education BCA Degree Exam Electronic Devices Digital Circuit Sample Paper 1 pdf
www entrance exam net AU Distance Education BCA Degree exam Electronic Devices Digital Circuit Sample Paper 1 pdf

7. (a) Briefly explain about NAND gate and XOR gate with truth table and Circuit diagram. (b) Explain the working of transistor as switch. 8. (a) Discuss in detail about the half subtractor with example. (b) Explain number system with appropriate examples.

Size: 43 Kb Pages: 2 Date: 2012-06-29

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www entrance exam net AU Distance Education BCA Degree Exam Electronic Devices Digital Circuit Sample Paper 4 pdf
www entrance exam net AU Distance Education BCA Degree exam Electronic Devices Digital Circuit Sample Paper 4 pdf

(10) (b) Explain the process of achieving breakdown in zener diode. (10) 2 WK 4 8. (a) Give short note about (i) Photo diode (ii) Operational amplifier applications. (10) (b) With suitable diagram, explain the structure and the operation of N-channel FET.

Size: 46 Kb Pages: 3 Date: 2012-11-29

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www entrance exam net AU Distance Education BCA Degree Exam Electronic Devices Digital Circuit Sample Paper 6 pdf
www entrance exam net AU Distance Education BCA Degree exam Electronic Devices Digital Circuit Sample Paper 6 pdf

Right and left. 5. (a) Write a summary about asynchronous counter and synchronous counter. (b) Explain details about pn diode and characteristics. 6. (a) Briefly explain about FET, JFET and MOSFET. (b) Explain details about op-amp characteristics. 7. (a) Distinguish between UJI and SCR. (b) Explain about application of Op-Amp. 8. (a) Explain details about review of amplifier and oscillator. (b) Discuss about gray code and ASCII code.

Size: 33 Kb Pages: 2 Date: 2012-06-27

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www entrance exam net AU Distance Education BCA Degree Exam Electronic Devices Digital Circuit Sample Paper 2 pdf
www entrance exam net AU Distance Education BCA Degree exam Electronic Devices Digital Circuit Sample Paper 2 pdf

(a) Prove the following equations using Boolean Algebra : (i) AB + ABC + A B + AB C = B + AC . (5) Ws5 (ii) ( A + B ) (A + C ) = AC + A B . (5) (b) Write in detail about decimal adder. (10) 5. (a) Explain in detail about JK Flip Flop. (10) (b) Describe the Shift Counters in detail. (10) 6. (a) Design a mod-15 ripple counter and draw the truth table. (10) 7. (10) 8.

Size: 43 Kb Pages: 2 Date: 2012-06-27

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www entrance exam net AU Distance Education BCA Deg Exam Electronic Devices Digital Circuit Sample Paper 112 pdf
www entrance exam net AU Distance Education BCA Deg exam Electronic Devices Digital Circuit Sample Paper 112 pdf

(5)  (a) Using logic gates draw the full adder Circuit and explain its function with truth table. (10) (b) Draw the three variable Minterm Karnaugh map and explain it? (10)  (a) Explain the function of J-K flip flop with truth table. (10) (b) Explain the function of ring counter. (10)  (a) Explain the VI characteristics of a pn junction diode with suitable diagram. (10) (b) With a neat diagram explain the working function of SCR.

Size: 36 Kb Pages: 1 Date: 2012-06-20

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www entrance exam net AU Distance Education BCA Deg Exam Electronic Devices Digital Circuit Sample Paper 101 pdf
www entrance exam net AU Distance Education BCA Deg exam Electronic Devices Digital Circuit Sample Paper 101 pdf

(i) 445. (ii) 178. 5. (a) Explain about the working principle of half adder with Circuit diagram. (b) Write short notes on synchronous counters. 6. (a) Perform binary addition on the following : (i) 1010 + 1111 1 # wk3 (ii) 23 + 48. (b) Write short note on breakdown diode. 7. (b) Explain Boolean theorem with examples.

Size: 35 Kb Pages: 2 Date: 2012-06-15

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www entrance exam net AU Distance Education BCA Deg Exam Electronic Devices Digital Circuit Sample Paper 111 pdf
www entrance exam net AU Distance Education BCA Deg exam Electronic Devices Digital Circuit Sample Paper 111 pdf

)16 (iv) (423)10 → ( ? )2 (10)  (a) Explain ASCII and BCD codes with suitable example. (10) (b) (i) Add (1011)2 with (1101)2 (ii) Subtract 29–10 using 2’s complement. (iii) Write (–12)10 into signed binary number (iv) Subtract (0110)2 from (1011)2. (10)  (a) Explain how the transistor acts as a switch. (10) (b) Draw the logic symbol for AND, X-OR, NAND and explain with truth table.

Size: 36 Kb Pages: 1 Date: 2013-01-10

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www entrance exam net AU Distance Education BCA Deg Exam Electronic Devices Digital Circuit Sample Paper 12 pdf
www entrance exam net AU Distance Education BCA Deg exam Electronic Devices Digital Circuit Sample Paper 12 pdf

Write briefly about (a) Half Adder (10) (b) Half Subtractor. (10) 4. (a) What is flip flop? With neat sketch and truth table explain the J-K flip flop. (10) (b) Write short notes on shift register. (10) 5. Write briefly about the working principle of P-N Diode and its characteristics. (20) 1 DE–262 6. Discuss briefly about (a) Operation of N-channel JFET.

Size: 34 Kb Pages: 2 Date: 2012-06-21

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