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8051年外部骚乱的例行人数
原标题:Prime number routine for External Interrupt in 8051

我用Keil C51写了8051年的打断例行公文如下:

void intrupt1(void) interrupt 2        // ext interrupt 1 vector
{   
    char i,j,prime;
    P2 = 0;
    for(i=2;i<128;i++)
    {
        prime = 1;
        for(j=2;j<i;j++)
        {
            if(i%j==0)
                prime = 0;
        }
        if(prime == 1)
        {
            P2 = i;
            delay2();
        }
    }
    P2 = 0;
}

当我试图模拟该数字时,该数字显示正确的原始数字为128,此后又变成了8个轨道柜台,然后又回到了显示的原始数字,即,在127个(最后的预计数)之后,产出为128,129,130....255。

我还写了一条外部打断的例行公文,即4个截面(正确操作),但我猜测会影响上述。

最佳回答

很可能是<条码><>char/code>在您的汇编者中签名(C标准允许<条码><>char/code>签署或未签署),范围为-128至127。 这一范围的任何价值都低于128。 因此,居住条件总是真实的,因此休息时间是有限的。

问题回答

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