#Assumptions
- It's not possible to type numbers with
+ prefix like +5
- It's not possible to type operation like
5--5. Instead, use 5+5
- Dividing by 0 will result in displaying
Error message
- Input is limited to the 7 characters including
- Maximal input value can be set to
9999999 or 99999.9
- Minimal input value can be set to
-999999 or -9999.9
- Press
* to remove the last typed input. It can be used multiple times to revert more than one input value.
- It is possible to recall the last typed operation by using the
* key. First you have to clear the current input, and
then press the * once again.
123+
322 <- start pressing `*`
32
3
<- empty input field, press the `*` once again
123+
- Trying to execute operations without right operand will trigger displaying
Error message, i.e. 100+=
- There is no support for typing values using scientific notation, i.e.
10e9