braille_edge_40_manual.doc

# Applications includes 6 utility programs calculator

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Applications includes 6 utility programs: calculator, Alarm, Date and time, Stop watch, count down and scheduler. You can move among the items in the applications list by pressing “Space-1” or “Space-4” 5.1 Calculator The Calculator can perform the four fundamental arithmetic operations, save calculations as a file, and copy and paste calculations. To open the calculator, from within “Applications”, move to the “Application” using the “Up” or “Down arrow”, and press “Enter”. Note: when using the Calculator, you must use computer Braille. 5.1.1. General functions When you launch the “Calculator”, number 0 is displayed. Use computer Braille to input numbers. Press “Enter” to emulate the Equal sign”. To input a new calculation, press “Enter”. If you want to review previous calculations and results, press the ‘up arrow’. While reviewing previous calculations, if you want to use this calculation to perform another calculation, move your cursor to the desired location and change the number, and press “Enter”. Use the following keystrokes in the Calculator: 1) View calculation result (=): Enter 2) Type new calculation: Enter 3) Plus: dots 3-4-6 4) Minus: dots 3-6 5) Multiply by: dots 1-6 6) Divided by: dots 3-4 7) Percent: dots 1-4-6

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8) Power: dots 4-5-7 9) Decimal point: dots 4-6 10) Left parenthesis: dots 1-2-3-5-6 11) Right parenthesis: dots 2-3-4-5-6 Note: To input a negative number, surround the negative number with parentheses. For example, when you type -2, press dots 1-2-3-5-6, dots 3- 6, dots 1-2 and dots 2-3-4-5-6. Immediately after you input percent (%) sign in the calculator, the result is displayed according to the percent value by dividing the original number by the number before the percent(%) sign. For example, If you want to calculate 90+20%, as soon as the percent (%) sign is entered, the percent value is immediately calculated, and 18, is displayed as twenty percent of 90 is 18. Finally, the result of the calculation is 108. However, when you place a multiplication sign before percent sign, for example, 20*40%, as soon as you enter the percent (%) sign, 0.4 is immediately displayed, as 40% equals 0.4. The final result of the entire calculation is 9 multiplying 20 by 0.4. 5.1.2 Clear All If you wish, you can delete all previously saved calculations and initialize the calculator. To do this, open the menu by pressing "Space-m (dots 1-3- 4)" or press "Alt". Then, use "Space-1" or "Space-4" to move to "Clear all", and press "Enter". Or you can activate this function by pressing “Ctrl-E (dots 1-5) directly from within in the calculation line. 5.1.3 Save file The “Save file” function allows you to save the current calculations and results to a file for future use. This may be useful if you are balancing your
checkbook and wish to keep a record of all of the entries, calculations, and results.

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