MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Iot knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Timer 0 is a ________ bit register. |
| A. | 32-bit |
| B. | 8-bit |
| C. | 16-bit |
| D. | 10-bit |
| Answer» D. 10-bit | |
| 2. |
How many interrupts are there in micro controller? |
| A. | 3 |
| B. | 6 |
| C. | 4 |
| D. | 5 |
| Answer» E. | |
| 3. |
What is the address range of SFRs? |
| A. | 80h to feh |
| B. | 00h to ffh |
| C. | 80h to ffh |
| D. | 70h to 80h |
| Answer» D. 70h to 80h | |
| 4. |
External Access is used to permit ____________ |
| A. | Peripherals |
| B. | Power supply |
| C. | ALE |
| D. | Memory interfacing |
| Answer» E. | |
| 5. |
Which pin provides a reset option in 8051? |
| A. | Pin 1 |
| B. | Pin 8 |
| C. | Pin 11 |
| D. | Pin 9 |
| Answer» E. | |
| 6. |
The use of Address Latch Enable is to multiplex address and data memory. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
What is order of the assembly and running 8051 program?i) Myfile.asmii) Myfile.lstiii) Myfile.objiv) Myfile.hex |
| A. | i,ii,iii,iv |
| B. | ii,iii,I,iv |
| C. | iv,ii,I,iii |
| D. | iii,ii,I,iv |
| Answer» B. ii,iii,I,iv | |
| 8. |
Auxiliary carry is set during which condition? |
| A. | When carry is generated from D3 to D4 |
| B. | When carry is generated from D7 |
| C. | When carry is generated from both D3 to D4 and D7 |
| D. | When carry is generated at either D3 to D4 or D7 |
| Answer» B. When carry is generated from D7 | |
| 9. |
Program counter stores what? |
| A. | Address of before instruction |
| B. | Address of the next instruction |
| C. | Data of the before execution to be executed |
| D. | Data of the execution instruction |
| Answer» C. Data of the before execution to be executed | |
| 10. |
SCON in serial port is used for which operation? |
| A. | Transferring data |
| B. | Receiving data |
| C. | Controlling |
| D. | Controlling and transferring |
| Answer» D. Controlling and transferring | |
| 11. |
Is ROM is used for storing data storage? |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Number of I/O ports in the 8051 microcontroller? |
| A. | 3 ports |
| B. | 4 ports |
| C. | 5 ports |
| D. | 4 ports with last port having 5 pins |
| Answer» C. 5 ports | |
| 13. |
Name the architecture and the instruction set for microcontroller? |
| A. | Van- Neumann Architecture with CISC Instruction Set |
| B. | Harvard Architecture with CISC Instruction Set |
| C. | Van- Neumann Architecture with RISC Instruction Set |
| D. | Harvard Architecture with RISC Instruction Set |
| Answer» C. Van- Neumann Architecture with RISC Instruction Set | |
| 14. |
What is the bit size of the 8051 microcontroller? |
| A. | 8-bit |
| B. | 4-bit |
| C. | 16-bit |
| D. | 32-bit |
| Answer» B. 4-bit | |
| 15. |
What do you mean by micro in microcontroller? |
| A. | Distance between 2 IC’s |
| B. | Distance between 2 transistors |
| C. | Size of a controller |
| D. | Distance between 2 pins |
| Answer» C. Size of a controller | |