题目内容

The 8051 has ( ).

A. 4 banks of 4 registers
B. 2 banks of 16 registers
C. 8 banks of 4 registers
D. 4 banks of 8 registers

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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

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