HIMS Inc.
BookSense XT – User Manual
2) Press the Right, OK, or Menu button. BookSense says “Upgrade firmware, dialog.”
3) Press the Down button to move to calculator. And press the Right, OK, or Menu button.
BookSense says ‘start calculator, 0”. Now, you can start using the calculator.
You can also press the Mode button for more than 2 seconds to execute the calculator. This
allows you to execute on the fly without using the menu. To exit the calculator, press the
Mode button for more than 2 seconds and BookSense says “exit calculator” and return to the
status before executing the calculator.
11.2 Inputting and operating the four fundamental arithmetic
Following buttons are used to operate the calculator program.
1) Addition: Right button
2) Subtraction: Left button
3) Multiplication: Up button
4) Division: Down button
5) Opening a parenthesis: Press the Left button for more than 2 seconds
6) Closing a parenthesis: Press the Right button for more than 2 seconds
7) Inputting a decimal point: Press the Up button for more than 2 seconds
8) Inputting %: Press the Down button for more than 2 seconds
Using the numeric button to input the number, navigation button to input the fundamental
arithmetic and you need to press Menu button to check the result. If you want to repeat the
result, you need to press OK button. The Cancel button acts as a backspace key, so you
can delete the number that you have entered. To delete all numbers you have entered, press
the CANCEL button for more than 2 seconds.
Let’s take a look at the examples.
1) “10*(13+7)”
(1) Press the number 1 and 0.
(2) Press the Up button to input *.
(3) Press the Left button for more than 2 seconds to input opening a parenthesis.
(4) Press the number 1 and 3.
(5) Press the Left button to input an addition.
(6) Press the number 7.
(7) Press the Right button for more than 2 seconds to input closing a parenthesis.
(8) And press the Menu button.
(9) Then you will get the result of “200.”
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