FPGA视频采集卡！使用FPGA采集CCD模拟信号，并DA转换为数字信号，用VGA输出显示！-FPGA video capture card! CCD analog signal using FPGA acquisition, and the DA is converted to a digital signal with VGA output!

基于VHDL语言，实现对ADC0809简单控制,ADC0809没有内部时钟，需外接10KHz~1290Hz的时钟信号，这里由FPGA的系 --统时钟（50MHz）经256分频得到clk1（195KHz）作为ADC0809转换工作时钟。 -Based on VHDL ADC0809 simple control, ADC0809 no internal clock, an external clock signal of 10KHz ~ 1290Hz here by the Departm

测量信号频率，为2015电赛频率计解决方案(Measure the signal frequency for the 2015 race frequency meter solution)