Instruction “DEC DPTR” is a valid 8051 instruction. ( )
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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
The addressing mode for an instruction "MOV R0, #30H" is ( )
A. register addressing mode
B. direct addressing mode
C. immediate addressing mode
D. register indirect addressing mode
ADC的转换速率是指完成一次从模拟转换到数字的AD转换所需要的时间的倒数。( )
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