① Travel time system: The travel time system of the pointer type quartz electronic alarm clock includes quartz resonators, CMOS integrated circuits (frequency division and driving), stepper motors (converting electrical energy into mechanical energy), counting and transmission mechanisms, pointer mechanisms, and other components; The timing system of a digital quartz electronic alarm clock includes quartz resonators, CMOS integrated circuits (frequency division, calculation, and driving), LCD screens or light-emitting diodes, conductive rubber, and other components; In addition, both pointer and digital devices include components such as batteries, trimming capacitors, clamps, and circuit boards.

② Alarm system: There are two types. One is to use integrated circuits or transistor switching circuits (separate components) to output signals and drive speakers or other sound devices; Another method is to directly use electromagnetic principles to activate or deactivate the current through the coil, activate a hammer to strike an alarm, or activate other sound devices.

There are many types of sound systems for alarm clocks, including single bell sound, double bell sound, back bell sound, variable sound sound sound, music sound, buzzing sound, birdsong sound, and time management.