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文章介绍一种实用的点阵式微打电路，由七针热敏印字头机芯及驱动电路、定时整形复位电路、８０３１单片机及其接口电路组成。
The article introduces a practical dot matrix micro-打电路, consisting of seven-pin thermal printing head movement and drive circuit, timing plastic reset circuit, 8031 single-chip microcomputer and its interface circuit.