图形控制 视频信号输入解码 图形界面LOGO设计 按键控制 AD输入-Graphical control input video signal decoding graphical interface LOGO design AD input button control

该图是用来描述采样控制系统的原理。采样控制系统是一个既有离散的数字信号又有连续模拟信号的混合系统。-This figure is used to describe the principle of sampled-data control system. Sampled-data control system has both discrete digital signals and continuous analog signals, which is a mixed system.

基于BHL2000实现字符灰度显示，本项目主要由三个模块构成：51单片机控制模块、BHL2000灰度调制模块、LED点阵显示模块。用AT89S51单片机产生16*16LED点阵的行扫描信号，并且由单片机控制BHL2000灰度调制芯片，输出调制后的驱动电流控制LED，实现LED点阵256级灰度显示。(Based on BHL2000, the character gray display is realized. This project is mainly composed of three m