很多ic芯片的资料,mcu,e2,时钟,红外,485,232接口-Ic a lot of information on the chip, mcu, e2, clock, infrared, 485232 Interface

upd78f9234芯片实现iic读写24c02和hl6024液晶显示，值得一看-iic read and write upd78f9234 chip 24c02 and LCD hl6024, see

红外通讯和485远程通讯，通过红外载波实现无线通讯，hl6024对nec9234的显示驱动程序，按键扫描程序。-485 infrared communications and telecommunications, wireless communications through infrared carrier wave, hl6024 on nec9234 display driver, key scanner.