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MCQs on 8051 Microcontroller Architecture –

Last updated on March 10th, 2022 at 04:25 pm

In this post, we have posted 15 MCQs on 8051 Microcontroller architecture.

We have distributed these questions among 3 pages (links at the bottom of each page in this series). We have also posted the correct answers at the end of this series (page 4).

So it’s time to target the MCQs to test your preparation.

MCQ on 8051 Microcontroller Architecture (page 1/4)

1 ) Number of pins present in 8051 Microcontroller?

  1. 20
  2. 30
  3. 40
  4. 80

2 ) An alternate function of port pin P3.1 in the 8051 is:

a) Memory write strobe
b) Memory read strobe
c) Serial Port Input
d) Serial Port Output

3 ) Bit address range in 8051 on-chip RAM is

a) 00H to 0FFH
b) 01H to 7FH
c) 00H to 7FH
d) 80H to 0FFH

4 ) Flag bit in 8051 used to detect errors in signed arithmetic is

a) P
b) OV
c) CY
d) None of the other options

5) In 8051, which bit-level operation is possible?

a) Complement
b) Set
c) None of the above
d) All the other options

Use the links below to go to the next pages of this MCQ set

See also  [PDF] Microprocessor MCQ on 8085 & 8086 - PDF download
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