使用51单片机对1602液晶显示器进行自定义字符编码，本例存储一个爱心图案，一个图案由多个字符块组成，存储在1602液晶缓存中。-Use 51 MCU 1602 LCD display customized character encoding, in this case to store a love pattern, a pattern composed of a plurality of blocks of characters stored in the 1602 cache.