digital-electronics-the-8051-microcontroller Related Question Answers

51. The RST pin requires a HIGH to reset the 8051 microcontroller.



52. A microcontroller is called a computer on a chip.



53. In an 8051 program DA A adjusts the value in the accumulator resulting from an addition into two BCDs.



54. Different instruction sets must make up for the various members of the 8051 family.



55. The ADC 0804 is an analog-to-digital converter that provides 8-bit output resolution that can be directly interfaced to a microcontroller.



56. Writing counter/loop programs is much more difficult with the introduction of the DJNA and the CJNE instructions.



57. The 8051 is a 40-pin IC. Twenty-two pins are needed for the four I/O ports.



58. Up to 65K of code memory and 65K of data memory can be added to any of the 8051 family members.



59. The internal RAM memory of the 8051 is:





60. This program code will be executed continuously: STAT: MOV A, #01H  JNZ STAT



61. The 8051 has ________ 16-bit counter/timers.





62. The address space of the 8051 is divided into four distinct areas: internal data, external data, internal code, and external code.



63. Data transfer from I/O to external data memory can only be done with the MOVX command.



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