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Preface
Congratulations on your choice of a Victor electronic printing calculator. Careful design,
quality materials, painstaking workmanship, and advanced research and production
facilities have given you a calculator that, with proper care, will provide years of trouble-
free service.
This operating manual describes the features and operation of the Victor 2640-2 electronic
printing calculator.
Model 2640-2 is a print/display calculator, 12-digit, with one independent memory.
This calculator features the four basic arithmetic operations, grand total, percentage and
delta percent-of-change, cost, sell, margin, change sign, item count, non-add/date
functions, programmable tax rate key for two independent tax keys, backspace, square root
function, time and date functions with battery back-up.
Setting the Date and Time
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