总 体 概 述 本设计采用AT89S52单片机作为整个系统的控制核心，具有:音乐琴, 电子钟, LED阵列扫描显示, 液晶字符显示, 循环彩灯 五个模块。音乐琴采用4X4矩阵键盘为输入键盘,共有十六个基本音, 并与其他功能组合, 具有一定的实用性与趣味性, 较好的完成题目要求。 关键词：单片机 矩阵键盘 频率 。 -A general overview of the design using AT89S52 microcontroller as the core of the con

Abstract—A novel algorithm to remove rain or snow streaks a video sequence using temporal correlation and low-rank matrix completion is proposed in this paper. Based on the observation that rain streaks are too small and move too fast to aff