在下面的示例中，cpuid指令采用% eax寄存器中的输入，然后在四个寄存器中给出输出：% eax、% ebx、% ecx、% edx。

In the following example, the cpuid instruction takes the input in the % eax register and gives output in four registers: % eax, % ebx, % ecx, % edx.

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这样，这里的% eax既可以用作输入寄存器，又可以用作输出寄存器。

Thus % eax serves here as both input and output register.

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当主控门打开时，经过转换的输入信号脉冲通过它进入计数寄存器，并在此统计，然后通过显示电路输出。

While the main gate is open, the conditioned input signal pulses are passed through to the counting register, where they are tallied and then scaled for output by the display circuitry.

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