MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The selector inputs to an arithmetic/logic unit (ALU) determine the __________ |
| A. | Selection of the IC |
| B. | Arithmetic or logic function |
| C. | Data word selection |
| D. | Clock frequency to be used |
| Answer» C. Data word selection | |
| 2. |
When performing subtraction by addition in the 2’s-complement system is? |
| A. | The minuend and the subtrahend are both changed to the 2’s-complement |
| B. | The minuend is changed to 2’s-complement and the subtrahend is left in its original form |
| C. | The minuend is left in its original form and the subtrahend is changed to its 2’s-complement |
| D. | The minuend and subtrahend are both left in their original form |
| Answer» D. The minuend and subtrahend are both left in their original form | |
| 3. |
The binary subtraction of 0 – 0 = ? |
| A. | Difference = 0, borrow = 0 |
| B. | Difference = 1, borrow = 0 |
| C. | Difference = 1, borrow = 1 |
| D. | Difference = 0, borrow = 1 |
| Answer» B. Difference = 1, borrow = 0 | |
| 4. |
What is the major difference between half-adders and full-adders? |
| A. | Full-adders are made up of two half-adders |
| B. | Full adders can handle double-digit numbers |
| C. | Full adders have a carry input capability |
| D. | Half adders can handle only single-digit numbers |
| Answer» D. Half adders can handle only single-digit numbers | |
| 5. |
A logic circuit that provides a HIGH output for both inputs HIGH or both inputs LOW is __________ |
| A. | Ex-NOR gate |
| B. | OR gate |
| C. | Ex-OR gate |
| D. | NAND gate |
| Answer» B. OR gate | |
| 6. |
Controlled buffers can be useful __________ |
| A. | To control the circuit’s output into the bus |
| B. | In comparison of component’s output with its input |
| C. | In increasing the output from its low input |
| D. | All of the Mentioned |
| Answer» B. In comparison of component’s output with its input | |
| 7. |
Controlled inverter is also known as _____________ |
| A. | Controlled buffer |
| B. | NOT gate |
| C. | Both controlled buffer and NOT gate |
| D. | Controlled gate |
| Answer» D. Controlled gate | |
| 8. |
WHEN_PERFORMING_SUBTRACTION_BY_ADDITION_IN_THE_2‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•S-COMPLEMENT_SYSTEM:?$# |
| A. | The minuend and the subtrahend are both changed to the 2’s-complement |
| B. | The minuend is changed to 2’s-complement and the subtrahend is left in its original form |
| C. | The minuend is left in its original form and the subtrahend is changed to its 2’s-complement |
| D. | The minuend and subtrahend are both left in their original form |
| Answer» D. The minuend and subtrahend are both left in their original form | |
| 9. |
Which of the following is correct for full adders?$ |
| A. | Full adders have the capability of directly adding decimal numbers |
| B. | Full adders are used to make half adders |
| C. | Full adders are limited to two inputs since there are only two binary digits |
| D. | In a parallel full adder, the first stage may be a half adder |
| Answer» E. | |
| 10. |
What_are_the_two_types_of_basic_adder_circuits?$ |
| A. | Sum and carry |
| B. | Half-adder and full-adder |
| C. | Asynchronous and synchronous |
| D. | One and two’s-complement |
| Answer» C. Asynchronous and synchronous | |
| 11. |
The binary subtraction of 0 – 0 = ?$ |
| A. | Difference = 0, borrow = 0 |
| B. | Difference = 1, borrow = 0 |
| C. | Difference = 1, borrow = 1 |
| D. | Difference = 0, borrow = 1 |
| Answer» B. Difference = 1, borrow = 0 | |
| 12. |
What is the first thing you will need if you are going to use a macro-function? |
| A. | A complicated design project |
| B. | An experienced design engineer |
| C. | Good documentation |
| D. | Experience in HDL |
| Answer» E. | |
| 13. |
A logic circuit that provides a HIGH output for both inputs HIGH or both inputs LOW is |
| A. | Ex-NOR gate |
| B. | OR gate |
| C. | Ex-OR gate |
| D. | NAND gate |
| Answer» B. OR gate | |
| 14. |
Controlled buffers can be useful |
| A. | To control the circuit’s output into the bus |
| B. | In comparison of component’s output with its input |
| C. | In increasing the output from its low input |
| D. | All of the Mentioned |
| Answer» B. In comparison of component‚Äö√Ñ√∂‚àö√ë‚àö¬•s output with its input | |
| 15. |
Why XOR gate is called an inverter? |
| A. | Because of the same input |
| B. | Because of the same output |
| C. | It behaves like a NOT gate |
| D. | None of the Mentioned |
| Answer» D. None of the Mentioned | |
| 16. |
Controlled inverter is also known as |
| A. | Controlled buffer |
| B. | NOT gate |
| C. | Both controlled buffer and NOT gate |
| D. | None of the Mentioned |
| Answer» D. None of the Mentioned | |