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Register Set of 8051 MCQs

  • 1. Which of the following is an 8-bit register?
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    Answer is : D
  • 2. Which of the following register can be addressed as a byte?
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    Answer is : C
  • 3. Which of the following is bit-addressable register?
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    Answer is : D
  • 4. The higher and lower bytes of a 16-bit register DPTR are represented respectively as
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    Answer is : C
  • 5. The register that is used for accessing external data memory is
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    Answer is : C
  • 6. Among the four groups of register banks, the number of groups that can be accessed at a time is
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    Answer is : A
  • 7. The number of 8-bit registers that a register bank contain is
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    Answer is : D
  • 8. If RS1=1, RS0=0, then the register bank selected is
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    Answer is : C
  • 9. If RS1=1, RS0=1, then the register bank selected is
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    Answer is : D
  • 10. The PCON register consists of
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    Answer is : D
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