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信息输送的过程也有同步和异步之分:同步的意义在于发送数据时数据线和时钟线是同步的,也就是数据信号和时钟信号同时由进行发送,这需要彼此都要专门的时钟信号来进行传送和接送,并且是强制性的,这种方法的特点在于它的速度较快、但相应占用的工作时间也相对的要长、同时技术难度也的大。它的要求在于在一帧的数据传送中不能有一位的误差,不然的话整个数据将发生错误,这在硬件上是一个比较大的难度。在一些**的设备中应用的越来越广泛,像**的医疗设备、数字信号设备等,在比较单一数据的传输中,它的效果的好。
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