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Microprocessors And Microcontrollers MCQ Questions & Answers | ECE

Learn Microprocessors And Microcontrollers MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Microprocessors And Microcontrollers MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-7 section-1

Each section contains 100 MCQs on Microprocessors and Microcontrollers .
61
What is the total external data memory that can be interfaced to the 8051?
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Answer & Solution
Answer: Option A
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62
Considering figure 1, if SI = 1000H, the content of register AH after the instruction MOV AH, [SI] of 8086 µp will be
Microprocessors and Microcontrollers mcq question image
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Answer & Solution
Answer: Option A
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63
In a computer, set of electrical paths which is used to transfer data is called
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Answer & Solution
Answer: Option C
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64
Address bus of 8086 contains
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Answer & Solution
Answer: Option A
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65
An 8-bit microprocessor has the typical two way connected buffered lines which are called:
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Answer & Solution
Answer: Option B
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66
Consider the following statements:
The 8259A Programmable Interrupt Controller can
1. manage eight interrupts
2. vector an interrupt request anywhere in the memory map
3. have 8-bit or 16-bit interval between interrupt vector locations
4. be initialized with operational command words
Which of the above statements are correct?
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Answer & Solution
Answer: Option B
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67
A controller that takes control of the buses and transfers data directly between source and destination bypassing the microprocessor is known as
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Answer & Solution
Answer: Option A
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68
In a 8051 microcontroller, PCON register controls the baud rate in:
1. Synchronous transmission
2. Asynchronous transmission
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Answer & Solution
Answer: Option B
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69
In 8051 family instructions, which one of the following option is true?
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Answer & Solution
Answer: Option A
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70
If the operating frequency of an 8086 microprocessor is 10 MHz and, if for the given instruction, the machine cycle consists of 4 T-states, what will be the time taken by the machine cycle to complete the execution of that machine cycle to complete the execution of that same instruction when three wait states are inserted?
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Answer & Solution
Answer: Option B
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