MScomm1控件用法，包括波特率，阀值，校验位，传入数据缓冲数组-MScomm1 control usage, including baud rate, thresholds, parity bit, incoming data buffer array

VC产生随机数，并绘制实时曲线，要求：每组产生十个或二十个，产生80时，清空，并能控制产生速度。-VC generate random numbers, and draw real-time curve, requirements: each produce ten or twenty, resulting in 80 when empty, and can control the generation rate.