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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-8 section-1

Each section contains 100 MCQs on Microprocessors and Microcontrollers .
71
A stake machine pushes operands on a stack and evaluates binary operators by a pcs (i.e pop/compute/store) where the top two operands are popped computation is performed and the result is pushed onto stack. Evaluation of an expression (x*y)+ (u*v) by Reverse Polish notation in a stack machine needs
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Answer & Solution
Answer: Option A
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72
The first machine cycle of an instruction is always
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Answer: Option B
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73
A CDMA system requires $$\frac{{{{\text{E}}_{\text{b}}}}}{{{{\text{I}}_0}}}$$ of 10 dB. Each of the transmitters in the network transmits data at the rate of 1 Kbps with a PN chip rate of 1 Mbps. The maximum number of such users that the network can support is:
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Answer & Solution
Answer: Option D
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74
If instruction RST 5 is written in a program the problem will jump to location
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Answer: Option C
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75
In case the code is position dependent, the most suitable addressing mode is
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Answer: Option C
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76
The number of pins in microprocessor 8086 is
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Answer: Option B
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77
Which one of the following pairs of 8086 microprocessor's interrupt is not correctly matched?
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Answer: Option C
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78
Which instruction of 8051 microcontroller is used for reading data from code memory?
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Answer: Option B
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79
The following instructions have been executed by an 8085 microprocessor
ADDRESS (HEX) INSTRUCTION
6010 LXI H, 8A79H
6013 MOV A, L
6014 ADD H
6015 DAA
6016 MOV H, A
6017 PCHL
From which address will the next instruction be fetched?
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Answer: Option C
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80
Which of the following interrupts is unmaskable interrupts
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Answer: Option C
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