Blue PCB design with a real-time score display mounted on the top of a digital tube — a visually striking, luxurious yet classic look that keeps score visible during play. Key benefits Immediate feedback: the top-mounted digital tube shows real-time scores so players can follow progress at a glance. Designed for creators: built for game enthusiasts who want to build or modify their own games, providing a hands-on platform for learning and experimentation. Immersive experience: four built-in 51 single-chip microcontroller games combined with a buzzer and background music deliver engaging, responsive gameplay. Clear function and form: the blue PCB and visible digital tube blend aesthetics with practical score display, making the unit both attractive and functional. Core features Four built-in games driven by a 51 single-chip microcontroller architecture. Real-time score shown on the top of the digital tube for easy visibility. Integrated buzzer with background music to signal events and enhance immersion. Design balances a classic, upscale appearance with straightforward electronic function. Practical applications (examples) Electronic courses: use as a hands-on teaching tool in school or university classes to demonstrate microcontroller-based games and score tracking. School labs and experiments: suitable for electronic experiment stations where students test, modify, and measure microcontroller behavior. Maker spaces and family entertainment: ideal for prototyping game ideas, shared play sessions, and interactive demonstrations. Who this is for Hobbyists and game enthusiasts who want an off-the-shelf platform for creating and testing game concepts. Educators and lab instructors seeking a compact, demonstrable example of microcontroller-driven game systems. Makers and small teams needing a simple, playable device that combines audio feedback and visible scoring. Performance and compatibility Built around the 51 single-chip microcontroller platform and includes four ready-to-play games plus audio feedback. The real-time digital tube score display and buzzer with background music provide clear visual and auditory signals during operation. This product combines a classic, premium appearance with practical features for creating, teaching, and enjoying microcontroller-based games.