last time when i came here to find some clock references. but most of them can not works well. so th
last time when i came here to find some clock references. but most of them can not works well. so this files works well on FPGA board....
last time when i came here to find some clock references. but most of them can not works well. so this files works well on FPGA board....
普通I/O口扩展,使其模拟串口显示数据,主要节省I/O资源。...
在多数情况下,集成电路芯片的管脚不会全部被使用。例如74ABT16244系列器件最多可以使用16路I/O管脚,但实际上通常不会全部使用,这样就会存在悬空端子。所有数字逻辑器件的无用端子必须连接到一个高电平或低电平,以防止电流漂移(具有总线保持功能的器件无需处理不用输入管脚)。究竟上拉还是下拉由实际器...
裡面包含VB控制電腦i/p port所需的軟件,以及相關的範例...
用于dsp2407a的普通i/o口的测试...