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NS500
Instructions manual
National Semiconductor NS500 Instructions Manual
Pocket printing calculator
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Low Battery: DIM Display or Erratic Print
Recommended Paper
Installing the Paper
Non-Print Switch
Decimal Switch
Numeral and Decimal Keys
CLEAR ENTRIES, CLEAR ALL Tel C
Adding Machine Keys
Addition
Subtraction
Repeat Addition/Subtraction
Multiplication
Division
Multifactor Multiplication/Division
Constant Multiplication
Constant Division
Percentages
The Memory
Mixed Calculations
Invalid Key Sequences Which Invert Division Entries
Examples of Common Business Problems
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