题目内容

When the 8051 is reset and the /EA line is HIGH, the PC points to the first program instruction in the ( ).

A. internal code memory
B. external code memory
C. internal data memory
D. external data memory

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The 8051 microcontroller is a/an ( )-bit microcontroller.

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

Instruction “DEC DPTR” is a valid 8051 instruction. ( )

The internal RAM of 8051 is( )

A. 4K bytes
B. 64K bytes
C. 128 bytes
D. 256 bytes

What is the reset value of the stack point SP register? ( )

A. 07H
B. FFH
C. 00H
D. 08H