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- 【VHDL-FPGA-Verilog】 需要实现点阵按列依次并且循环显示的效果，可以分析视觉上可以观察到列的变化，则列的扫描频率必定要远远小于行扫描的频率。在程序中，设置行扫描的频率等于前次实验中数码管扫描的频率，设置列扫描的频率为5HZ，即每0.2s显示亮的一列向前推进一列。在程序中，使用16进制计数作为74HC154的输入：分出5hz的频率，并用其计数，将计数值作为74HC154，则其译码产生的输出变化也为5hz，并且实现每列一次选通。由于每行对应的数码管共阳极。直接赋
Update : 2025-04-05 | Size : 728064