题目内容

单片机的4个并行I/O端口各占几个引脚?

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

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A. P0
B. P3
C. P1
D. P2

A. char a(10);
B. int k=10; int a[k];
C. int a[0...100];
D. int a[5];

A. char ch1[]={'1','2','3','4','5'};
B. int y[5]={0,1,3,5,7,9};
C. char ch2={'/x10','/xa','/x8'};
D. double x[5]={2.0,4.0,6.0,8.0,10.0};

A. int a[][]={{1,2,3},[4,5,6}};
B. int a[4][]={1,2,3,4,5,6};
C. int a[][3];
D. int a[][3]={1,2,3,4,5,6};