This is a DIY 4digit digital clock kit powered by a 51 microcontroller. It uses DS1302 as the clock chip and drives a 4digit 1inch digital tube through a triode driver. Luminous colors are available. The chip comes with a preloaded program, and with proper installation and soldering, it can be assembled successfully in one pass. Key benefits Simple, selfcontained timekeeping solution with DS1302 for reliable clock operation Preloaded program eliminates the need for initial programming Compact 4digit 1inch display suitable for small projects and demonstrations Multiple luminous color options to suit different appearances and environments Easy drive architecture using a triode to simplify the circuit and wiring Educational value: ideal for handson learning in electronics and embedded systems What you get and how it performs Controller: 51 microcontroller Clock chip: DS1302 Display: 4digit 1inch digital tube Driving method: triode driven Visuals: luminous colors available Assembly: designed for DIY soldering; proper installation and welding are essential for successful operation Programmability: comes with a preinstalled program for immediate use Specifications and practical details Function: builds a standalone 4digit digital clock with basic timekeeping Compatibility: suitable for electronics education, training, and hobby projects Size: utilizes a 4digit 1inch display for compact form factor Performance: reliable timekeeping with DS1302 and straightforward drive circuitry Use scenarios College and vocational education labs: teach digital electronics and embedded system concepts with a readytorun clock project Electronics training classes and hobby clubs: handson practice in soldering, wiring, and basic microcontroller integration hobby projects: create compact clocks or timing displays for desks, workshops, or demonstrations Prototyping and demonstrations: quick, tangible clock solution to illustrate realtime operation and interface concepts Notes Proper installation and soldering are critical to ensure the clock functions correctly The kit emphasizes ease of use with a preloaded program, but some basic electronics assembly skills are recommended for results