题目内容

8051使用指令MOVX A,@R0读外部数据存储器时,不起作用的信号是()

A. /RD
B. /WR
C. ALE
D. P0口

查看答案

搜索结果不匹配？点我反馈

更多问题

The great common divisor of 1001 and 1331 is ______ 。

Ifa relation is anti-symmetric, then this relation also is asymmetric.( )

If Timer 0 of 8051 counts in mode 2, after executing the instruction “MOV TL0, #01H”, it will generate the overflow after counting ______ numbers.

The number of 8051 interrupt priorities is ______ .