计算练习:要求使用者输入每组运算的题量和出现数字的最大值,然后计算出随机出的计算题.电脑最后给出正确率.-Calculation exercises: ask the user to input the amount of each operation and the emergence of problems the maximum number, and then calculate the random out of the math. Finally, the accuracy of t

ASK调制VHDL程序及仿真:基于VHDL硬件描述语言，对基带信号进行ASK振幅调制-ASK modulation and VHDL simulation: based on the VHDL hardware descr iption language ASK amplitude modulation, the baseband signal

VGA时序描述硬件图片的方法，适用于需要高速显示图片的场合。-VGA timing hardware picture descr iption method, try to ask for a quick picture of the occasion.