Victor vct12103 ユーザーガイド

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RESET
RESET
RESET:
Electromagnetic interference or electrostatic discharge may cause
 the display to malfunction or the contents of the memory to be
 lost or altered. Should this occur, use the tip of a ball point pen 
(or similar sharp object) to press the [RESET] button on the bottom
 of the calculator. After resetting, be sure to set the tax rate, time
 and date again.