本文所介绍的是采用以CMOS数字集成电路为主,另加一块普通五功能电子表及少量元器件,使改装后的收音机具有计时、定时收音、定闹、延时关机、催眠、助听、门铃及多种报警功能。整个新增加部分具有使用元件少、线路简单且功能多等特点,制作安装能一次成功而不必调试。 This article describes the use of CMOS digital integrated circuits, plus a common five-function electronic meter and a small amount of components, so that the modified radio with timing, timing radio, delay, delay shutdown, hypnosis, hearing aids, Doorbell and a variety of alarm functions. The new added part has the use of components, simple lines and features such as multi-functional, production and installation can be successful without having to debug.