Digital Electronics- The 8051 Microcontroller

Digital Electronics- The 8051 Microcontroller
1. The internal RAM memory of the 8051 is:
  • 32 bytes
  • 64 bytes
  • 128 bytes
  • 256 bytes
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2. The internal RAM memory of the 8051 is:
  • 32 bytes
  • 64 bytes
  • 128 bytes
  • 256 bytes
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3. This program code will be executed continuously:
STAT:     MOV A, #01H
               JNZ STAT
  • TRUE
  • FALSE
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4. The 8051 has ________ 16-bit counter/timers.
  • 1
  • 2
  • 3
  • 4
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5. The address space of the 8051 is divided into four distinct areas: internal data, external data, internal code, and external code.
  • TRUE
  • FALSE
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6. Data transfer from I/O to external data memory can only be done with the MOVX command.
  • TRUE
  • FALSE
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7. The 8051 can handle ________ interrupt sources.
  • 3
  • 4
  • 5
  • 6
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8. The special function registers are maintained in the next 128 locations after the general-purpose data storage and stack.
  • TRUE
  • FALSE
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9. This statement will set the address of the bit to 1 (8051 Micro-controller):
SETB 01H
  • TRUE
  • FALSE
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10. MOV A, @ R1 will:
  • copy R1 to the accumulator
  • copy the accumulator to R1
  • copy the contents of memory whose address is in R1 to the accumulator
  • copy the accumulator to the contents of memory whose address is in R1
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Digital Electronics
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