液晶屏显示文字，文字清屏，左移，换行等，在51单片机上的液晶屏操作，可仿真，第六次考核任务如下：
观看lesson8并结合电子书学习液晶显示(理解时序概念并学会看时序图),在液晶任意位置显示任意内容。
要求：液晶显示hello world！(LCD screen to display text, text screen, left, wrap, on the MCU 51 LCD screen operation, simulation, sixth assessment tasks are as follows:
Watch Lesson8 and learn LCD (learn the concept of timing and learn timing chart) with e-books, display any content in any position of lcd.
Requirements: liquid crystal display Hello world!)