INPUT：这个4gl函数的输入参数的数据类型；必须从左到右与函数定义中的输入参数一一对应，还必须与输入参数数量匹配。

Input: Data types of the input arguments to this 4gl function; must have one-to-one correspondence from left to right, and must match the count of arguments, as in the function definition.

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OUTPUT：这个 4GL 函数返回的结果的数据类型；必须从左到右与函数定义中的输出参数一一对应，还必须与输出参数数量匹配。

OUTPUT: Data types of result returned from this 4GL function; must have one-to-one correspondence from left to right, and must match the count of arguments, as in the function definition.

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此外，还指出各种逻辑函数修改方程与各类触发器具有一一对应的关系。

Furthermore, it is pointed out that various modification equations for logic functions correspond to various flip-flops respectively.

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