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Design and production of quiz answering machine

Overview

The system uses the MCS-51 series microcontroller STC15 as the central device to design the quizzes answering machine, realizing a modular design of intelligent answering machines, which is widely used in answering competitions. Each group has an answering button. The host has start, end and clear keys. In the background, the host set a 30-second countdown to answer the question. After the host presses the button to start, it is valid for the contestants to start answering, the digital tube displays the countdown to the answering time and the contestant number, and the speaker prompts. The host can press the button to end and a new round of Q&A begins.

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-19 21:41:41

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