Key benefits Accurate, stable 24-hour timing: a high-frequency signal generator is precisely divided to produce a 1 Hz square-wave second pulse, giving more accurate timekeeping than a simple low-frequency source. Easy to build and learn from: this DIY kit is ideal for hobbyists and technical instruction because it uses standard CMOS logic chips instead of a microcontroller—soldering and circuit assembly teach fundamentals of digital timing and decoding. Reliable, long-lasting hardware: constructed from quality components for consistent performance and extended service life. What the kit contains and how it works Function block overview: the kit includes a secondary signal (pulse) generator, a counter, a decoding display stage, and a timing circuit (time base). Timing method: a high-frequency signal generator is exactly divided to create a precise 1 Hz rectangular (square) wave used as the second pulse, improving temporal accuracy. No microcontroller: the design uses discrete ICs (no MCU or firmware). Timekeeping is implemented with logic chips and can be calibrated for hours, minutes and seconds. There is no alarm function. Key specifications (components used) 24-hour digital clock kit built from CD4518, CD4511, CD4081, CD4013, CD4060 and other CMOS chips. Circuit implementation: purely discrete-logic—no program or embedded software is required. Practical attributes Function: 24-hour digital clock with second, minute and hour counting and a decoded display output. Compatibility: suitable for hobby electronics, classroom experiments, and technical instruction environments where MCU-free logic design is preferred. Material and performance: assembled from high-quality components to ensure stable operation and long service life. Suggested applications Practical welding instruction: use as a reliable, teachable timing device during vocational welding classes where students learn to build and test real circuits. Hobbyist projects: build and display a discrete-logic 24-hour clock in a home workshop or personal electronics bench. Electronics education labs: demonstrate frequency division, counting, decoding and timing principles without software, ideal for hands-on curricula. What you can adjust Time calibration: hours, minutes and seconds can be calibrated directly within the circuit. No alarm feature: the kit focuses on accurate timekeeping and display rather than alarm/time-of-day alerts. What to expect in delivery A parts kit containing the listed CMOS ICs and associated components to assemble a 24-hour digital clock using the described secondary signal generator, counter, decoding display and timing circuit. Materials are selected for durability and reliable performance.