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《Journal of Beijing University of Chemical Technology》 1986-01
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Circuit Design for the Portable Automatic Printer

Su Zhaotang, Zhao Weizhao Deparment of Chemical Automation  
A proper control circuit was designed for a portable automatic printer, and its printing mechanism was taken from a 1871 PD portable caculator. The printer installed in a small digital temperature scan measuring device, for printing the measured temperature with clear present high reliability and low cost. The block diagram of the automatic printer and some key circuits were described. The principle of its operation could also be used as reference in designing new generation of printers.
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