8051 Microcontroller MCQ Questions

8051 Microcontroller MCQs : This section focuses on "8051 Microcontroller" in Embedded Systems. These Multiple Choice Questions (MCQ) should be practiced to improve the Embedded Systems skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. The first microprocessor ____________ was invented by Intel Corporation

A. 4001
B. 4002
C. 4003
D. 4004

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2. 8051 is ________ microcontroller.

A. 4-bit
B. 8-bit
C. 16-bit
D. All of the above

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3. In Which year, Intel introduced 8051 microcontroller?

A. 1975
B. 1979
C. 1981
D. 1985

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4. Which of the following is Features of 8051 Microcontroller?

A. 16-bit program counter and data pointer
B. Four 8-bit ports
C. Three internal and two external Interrupts
D. All of the above

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5. 8051 Microcontroller has 4KB bytes on-chip program memory?

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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6. 8050 Microcontroller has ?

A. 8-bit unidirectional data bus
B. 16-bit unidirectional data bus
C. 8-bit bidirectional data bus
D. 16-bit bidirectional data bus

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7. 8051 Microcontroller has ?

A. 8-bit unidirectional address bus
B. 16-bit unidirectional address bus
C. 8-bit bidirectional address bus
D. 16-bit bidirectional address bus

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8. How much I/O pins 8051 has?

A. 4
B. 8
C. 16
D. 32

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9. 8031 microcontroller is another member of the 8051 family.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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10. 8051 Microcontroller has Four register banks?

A. Yes
B. No
C. Can be yes or no
D. Can not say

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