DaCalc Support normal mode

Normal mode in DaCalc means DaCalc can work as a common calculator. User can input expression by the calculator panel instead of composing a formula at first, then load it. It saves much time in the scenario when users only want to do some simple calculations.

The another mode in DaCalc is Formula mode, which comes with the first release.

Normal mode is the default mode, but switching between them is easy. Click _‘Load’_ in menu to load a formula will switch DaCalc to Formula mode. Click _‘Reset’_ in menu will switch back to Normal mode again.

You will notice that the number panel is a litter different for Normal mode and Formula mode.

Try it yourself!