单片机的时钟信号用来提供单片机片内各种微操作的时间基准，复位操作则使单片机的片内电路初始化，使单片机从一种确定的初态开始运行-Single-chip clock signal used to provide single-chip micro-chip time base operation, reset operation is to enable single-chip-chip in-circuit initialization, so that single-chip from a de