RadioShack EC-2037 - Manuals

Page 2 - FEATURES

2 FEATURES Your RadioShack EC-2037 10-Digit Dual-Powered Metal CaseDesktop Calculator has two power sources so you can use it al-most anywhere. Its built-in solar panel provides power whenyou expose the calculator to light. When the surrounding light isnot bright enough, the supplied internal batter...

Page 3 - CONTENTS

3 CONTENTS Operation ............................................................................... 4 Turning the Calculator On and Off .............................................................................. 4 Using the +/– Key ............................................................ 4Co...

Page 4 - OPERATION

4 OPERATION TURNING THE CALCULATORON AND OFF Press ON/C to turn on your calculator, then tilt the displayto the best viewing angle. To clear a calculation from thedisplay, press ON/C again. If you do not press a key forabout 5 minutes, your calcula-tor automatically turns off. Toturn it off sooner, ...

Page 5 - CORRECTING ENTRY ERRORS

5 CORRECTING ENTRY ERRORS If you enter an incorrect value, press CE once. Then enter the correct value and continue your calculation. If you press an incorrect function key ( + , – , ×××× , ÷), simply press the correct function key and continue your calculation. E appears in the lower left corner wh...

Page 6 - Estimating Calculation Results

6 Estimating Calculation Results If you perform a calculation that results in an overflow error, youcan estimate the correct result (to 10 significant digits) by fol-lowing these steps. 1. Count the number of digits displayed to the left of the deci- mal point. 2. Remove the decimal point. 3. Add as...

Page 7 - CALCULATION EXAMPLES; Mixed Calculations

7 CALCULATION EXAMPLES You can perform basic calculations (addition, subtraction, andso on) with this calculator as you would with most other calcula-tors. The following sections include examples of more ad-vanced calculations. Mixed Calculations Example: 256 + 378 – 223 × 2.3 ÷ 2.5 + 24 – 36 = You ...

Page 8 - Constants

8 Constants For multiplication, the first value you enter is the constant. Foraddition, subtraction, and division, the second value you enter isthe constant. Constant: You Press: You See: 2 2 ×××× 4 = 8. = 16. = 32. 6 3 + 6 = 9. = 15. = 21. 5 50 – 5 = 45. = 40. = 35. 2 48 ÷ 2 = 24. = 12. = 6.

Page 11 - Note: Each time you press

11 Square Root Example: = 4 Memory Calculations To store a value in memory, first press ON/C to clear all calcula- tions and MC (memory clear) to clear the memory. Then enter the number or calculation and press M+ . Note: Each time you press M+ , M – , or MR, M appears in the up- per left corner of ...

Page 13 - CARE

13 CARE To enjoy your RadioShack EC-2037 calculator for a long time: • Keep the calculator dry. If it gets wet, wipe it dry immedi- ately. • Use and store the calculator only in normal temperature environments. • Handle the calculator gently and carefully. Don’t drop it. • Keep the calculator away f...

Page 14 - REPLACING THE BATTERY

14 REPLACING THE BATTERY Although your calculator uses solar power most of the time, thebackup battery will eventually become weak and need replac-ing. If the display speed slows down in a dimly-lit room, replacethe battery with a RadioShack 389A type button-cell battery. Caution: Always use a fresh...

Page 15 - SPECIFICATIONS

15 SPECIFICATIONS Power Source ......................................................... Solar Panel or One 389A Button-Cell Battery Operating Temperature ......................................... 32° to 104°F (0° to 40°C) Dimensions (HWD) ....................... 6 11 / 16 ×××× 4 51 / 64 × × × × 1 1...