Traditional Chinese Practical Nine-way answering machine: Circuit Design, Parts List & Workshop Prototype Guide

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In short: Traditional Chinese Practical Nine-way answering machine. This entry documents a circuit & prototype taken from Chinese practical-technology literature, written for small-scale makers and home producers. The text below is the full English translation of the original Chinese workshop notes, covering materials and quantities, the step-by-step sequence, and the practical cautions recorded in the source. Roughly 1525 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.

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Nine-way answering machineThis answering machine has a total of nine groups of answering inputs. The group number is displayed by seven-segment stroke numbers. Each segment is equipped with a 6.3V, 0.15A light bulb, which can display numbers such as 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, as shown in Figure 140. S in the figure is the power switch, controlled by the program host. Close S, the circuit enters the initial waiting state, and all components are turned off. …

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