Control
- input using up and select buttons
- hold select button to cancel current text selection
- down button to enter edit mode
- hold down button to clear formula
Edit mode
click <--: move cursor 1 step to the left
hold <<-: move cursor to the beginning
click del: delete preceding character (backspace in actuality)
hold -X-: exit edit mode
click -->: move cursor 1 step to the right
hold ->>: move cursor to the end
Formula
- operators execute first come first serve
- if you want to specify which to carry out first, use brackets
- brackets will only be processed if paired
- unpaired brackets are ignored and will not inflict error
- cannot have operators immediately after an open bracket (except -ve sign) e.g: (*3 - 3)
Input errors (vibrate)
- exceed limit of 7 digits (by inputting a number or deleting a symbol making 2 numbers converge becoming more than 7 digits)
- double decimal point in a single number
- double operator symbol