MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 145 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Logic Design knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
9 in binary code is represented by |
| A. | 1000 |
| B. | 1001 |
| C. | 1010 |
| D. | 101 |
| Answer» C. 1010 | |
| 2. |
The left most position in the lamp handball game is the |
| A. | wall |
| B. | fence |
| C. | ball |
| D. | indicator |
| Answer» B. fence | |
| 3. |
An open-collector gate requires which resistor to perform correctly? |
| A. | shift resistor |
| B. | serial resistor |
| C. | ring resistor |
| D. | external resistor |
| Answer» E. | |
| 4. |
CRO is a device named as |
| A. | complex range oscilloscope |
| B. | complex ray oscilloscope |
| C. | cathode ray oscilloscope |
| D. | cathode range oscilloscope |
| Answer» D. cathode range oscilloscope | |
| 5. |
The inverter of F if |
| A. | F' |
| B. | F |
| C. | FF |
| D. | (-F) |
| Answer» B. F | |
| 6. |
74195 IC can be converted to a bidirectional shift register with parallel load and conjunction with |
| A. | decoder circuit |
| B. | encoder circuit |
| C. | multiplexer circuit |
| D. | None |
| Answer» D. None | |
| 7. |
Integrated circuit number 7476 consists of |
| A. | Various gates |
| B. | 4 bit binary adder |
| C. | Dual JK-type Flip-flops |
| D. | 4 bit ripple counter |
| Answer» D. 4 bit ripple counter | |
| 8. |
8 input mux will have |
| A. | 2 select lines |
| B. | 3 select lines |
| C. | 4 select lines |
| D. | 5 select lines |
| Answer» C. 4 select lines | |
| 9. |
Lamp handball game uses application of bidirectional shift register |
| A. | with parallel load |
| B. | without parallel load |
| C. | with serial load |
| D. | without serial load |
| Answer» B. without parallel load | |
| 10. |
Memory can be expanded using two |
| A. | 7489 ICs |
| B. | 7487 ICs |
| C. | 7488 ICs |
| D. | 7485 ICs |
| Answer» B. 7487 ICs | |
| 11. |
JK master slave flip-flop has Integrated circuit number |
| A. | 7476 |
| B. | 7451 |
| C. | 7456 |
| D. | 7436 |
| Answer» B. 7451 | |
| 12. |
Gray to binary conversion can be implemented with |
| A. | AND |
| B. | XOR |
| C. | NAND |
| D. | NOR |
| Answer» C. NAND | |
| 13. |
4bit counter will produce |
| A. | 2 outputs |
| B. | 4 outputs |
| C. | 8 outputs |
| D. | 16 outputs |
| Answer» C. 8 outputs | |
| 14. |
The 14 pin of 7 segment 7730 is |
| A. | common anode |
| B. | common cathode |
| C. | ground |
| D. | Vcc |
| Answer» B. common cathode | |
| 15. |
The subtracting of two binary numbers can be done by taking the 2's complement of the subtrahend and adding it to the |
| A. | binary numbers |
| B. | Minuend |
| C. | 0 |
| D. | None |
| Answer» B. Minuend | |
| 16. |
7410 is the |
| A. | 4input NAND |
| B. | 3input NAND |
| C. | 5input NAND |
| D. | 6input NAND |
| Answer» C. 5input NAND | |
| 17. |
In order to provide proper current to the leds of 7 segment with Vcc we use |
| A. | capacitor |
| B. | resistance |
| C. | ground |
| D. | transistor |
| Answer» C. ground | |
| 18. |
When J and complement of K are 1, flip-flop QA after the shift is equal to |
| A. | 1 |
| B. | 0 |
| C. | reset |
| D. | defined |
| Answer» B. 0 | |
| 19. |
In the 14 pin gate, pin number 14 is marked |
| A. | Vcc |
| B. | Vdd |
| C. | ground |
| D. | AC |
| Answer» B. Vdd | |
| 20. |
No greater than 9 in BCD creates |
| A. | blank pattern |
| B. | meaningless pattern |
| C. | value |
| D. | both a and b |
| Answer» E. | |
| 21. |
Integrated circuit number 74194 consists of |
| A. | BCD to seven segment decoder |
| B. | 1 Quadruple |
| C. | Bidirectional shift registers |
| D. | None |
| Answer» D. None | |
| 22. |
Strobe S in a mux acts as |
| A. | enable |
| B. | reset |
| C. | clear |
| D. | stop |
| Answer» B. reset | |
| 23. |
ROM simulator converts binary codes into |
| A. | hex |
| B. | octal |
| C. | gray code |
| D. | BCD code |
| Answer» D. BCD code | |
| 24. |
ME input in RAM is called |
| A. | mechanical engineer |
| B. | memory erase |
| C. | memory enabled |
| D. | mode erase |
| Answer» D. mode erase | |
| 25. |
Shift registers are capable of shifting in |
| A. | one direction |
| B. | two directions |
| C. | three directions |
| D. | both a and b |
| Answer» B. two directions | |
| 26. |
Integrated circuit number 74157 has |
| A. | 8x1 mux |
| B. | 3x8 decoder |
| C. | 2x1 mux |
| D. | 4bit counter |
| Answer» D. 4bit counter | |
| 27. |
LED stands for |
| A. | light emitting diode |
| B. | light emitting device |
| C. | light electronic diode |
| D. | light electronic device |
| Answer» B. light emitting device | |
| 28. |
The clock output and master slave output provides a |
| A. | timing diagram |
| B. | map |
| C. | chart |
| D. | table |
| Answer» B. map | |
| 29. |
QA inputs of shift registers behaves like inputs of |
| A. | T flip-flops |
| B. | D flip-flops |
| C. | RS flip-flops |
| D. | JK flip-flops |
| Answer» E. | |
| 30. |
Four gates in a package is called |
| A. | biruple |
| B. | octruple |
| C. | dualruple |
| D. | quadruple |
| Answer» E. | |
| 31. |
ROM simulator adds two 3bit and 2bit numbers to produce output of |
| A. | 2bits |
| B. | 3bits |
| C. | 4bits |
| D. | 5bits |
| Answer» D. 5bits | |
| 32. |
The comparison of two numbers in an operation that determines whether a number is greater, equal or less than other number is called as |
| A. | Magnitude Comparator |
| B. | Logic Operator |
| C. | Logical circuit |
| D. | None |
| Answer» E. | |
| 33. |
Every oscilloscope display should be crisscrossed with horizontal and vertical lines which is called as? |
| A. | Sectors |
| B. | Divisions |
| C. | Segments |
| D. | None |
| Answer» C. Segments | |
| 34. |
Integrated circuit number 74151 has |
| A. | 8x1 multiplexers |
| B. | 3x8 decoder |
| C. | 2x1 mux |
| D. | 4bit counter |
| Answer» B. 3x8 decoder | |
| 35. |
IC number of BCD to 7 segment is |
| A. | 7442 |
| B. | 7441 |
| C. | 7447 |
| D. | 7446 |
| Answer» D. 7446 | |
| 36. |
Edge triggered flip-flops can be |
| A. | positive edge triggered |
| B. | negative edge triggered |
| C. | level triggered |
| D. | both a and b |
| Answer» E. | |
| 37. |
Integrated circuit number 74195 consists of |
| A. | 2 registers |
| B. | 4 bit shift registers |
| C. | dual d type Flip-flops |
| D. | 4 binary adder |
| Answer» C. dual d type Flip-flops | |
| 38. |
Clock pulses have |
| A. | low frequency |
| B. | high frequency |
| C. | mid frequency |
| D. | both a and b |
| Answer» E. | |
| 39. |
The integrated circuits to be used in experiments can be classified as Small Scale Integration (SSI) and? |
| A. | Micro Scale integration |
| B. | Medium Scale integration |
| C. | both a and b |
| D. | None |
| Answer» C. both a and b | |
| 40. |
Each gate has a delay of |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 41. |
When the mode of adder subtractor is 1 than it |
| A. | adds |
| B. | subtracts |
| C. | divides |
| D. | multiplies |
| Answer» C. divides | |
| 42. |
BCD to 7 segment generates |
| A. | 6 segment code |
| B. | 7 segment code |
| C. | 8 segment code |
| D. | 9 segment code |
| Answer» C. 8 segment code | |
| 43. |
Shift register whose serial input is connected to some function of selected registers output is called as |
| A. | feedback shift register |
| B. | bidirectional shift register |
| C. | unidirectional shift register |
| D. | ring shift register |
| Answer» B. bidirectional shift register | |
| 44. |
Parity checker is used for |
| A. | detection |
| B. | testing |
| C. | debugging |
| D. | error |
| Answer» E. | |
| 45. |
For reading operation on RAM, there should be |
| A. | ME=0 |
| B. | WE=1 |
| C. | ME=1 |
| D. | both a and b |
| Answer» E. | |
| 46. |
At the start of the lamp handball game the ball (indicator lamp) is placed at |
| A. | top |
| B. | left |
| C. | bottom |
| D. | right |
| Answer» E. | |
| 47. |
The rate of movement of light in lamp handball game is determined by clock's |
| A. | input |
| B. | frequency |
| C. | voltage |
| D. | current |
| Answer» C. voltage | |
| 48. |
Integrated circuit number 72555 timer is same as |
| A. | 555 |
| B. | 444 |
| C. | 333 |
| D. | 222 |
| Answer» B. 444 | |
| 49. |
Bidirectional shift registers shifts |
| A. | left |
| B. | right |
| C. | up |
| D. | both a and b |
| Answer» E. | |
| 50. |
When the output is equal to zero we can say that |
| A. | A>B |
| B. | AA=BNone |
| C. | A=B |
| D. | None |
| Answer» C. A=B | |