Exercise: The 8051 Microcontroller

Questions for: The 8051 Microcontroller

To interface external EPROM memory for applications, it is necessary to demultiplex the address/data lines of the 8051.
A:
True
B:
False
C:
D:
Answer: A
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The I/O port that does not have a dual-purpose role is:
A:
port 0
B:
port 1
C:
port 2
D:
port 3
Answer: B
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What is the difference between the 8031 and the 8051?
A:
The 8031 has no interrupts.
B:
The 8031 is ROM-less.
C:
The 8051 is ROM-less.
D:
The 8051 has 64 bytes more memory.
Answer: B
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The designs of a centigrade thermometer and a PWM speed-control circuit can be implemented by the 8051.
A:
True
B:
False
C:
D:
Answer: A
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When the 8051 is reset and the EA line is LOW, the program counter points to the first program instruction in the:
A:
internal code memory
B:
external code memory
C:
internal data memory
D:
external data memory
Answer: B
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