题目内容

AT89C51单片机的CPU是（）位的

A. 16
B. 4
C. 8
D. 准16位

查看答案

搜索结果不匹配？点我反馈

更多问题

C程序存盘的后缀名是（）

A. C
B. HEX
C. DSN
D. TXT

C项目编译后可执行文件的后缀名是（）

A. C
B. HEX
C. DSN
D. TXT

AT89C51系列单片机由_______字节片内RAM存储器，由_个16位定时器；有4个位并行口；P0,P1,P2,P3;有_个全双工的串行口；有____个中断源。

[音频]Listen and fill in the blanks.Ruby got her first ( 1 ) payment, but instead of cash, she got a check. She didin't know how to use it. John advised her to ( 2 ) the check in a bank, and then pay her ( 3 ) by checks and get some cash with her ( 4 ) card. With the ATM, you can deposit or get money all over the city or the country, or even around the ( 5 ). You can even pay your bills( 6).