18B20在LCD1602上显示温度，修改过程序，加了一测忙信号位，通过测试，更改一点适用于多点测温 MCU时钟是11.0592MHZ-18B20 temperature in the LCD1602 display, modify the program, plus a measure of busy signals bit to pass the test, the change is true for the multi-point temperature MCU clock is 11.