12864液晶（STC7920控制器）屏上用基本指令与扩充指令分时显示文字、图片、图片与文字混合、任意位置的图片。-12864 LCD (STC7920 controller) to use on-screen instructions and the expansion of the basic time-sharing display text instructions, pictures, images and character

用stc7920和4*4按键 c51单片机做到电子密码锁-And 4* 4 with stc7920 do electronic lock button