Abacus Display Calculator

The numerical display section of the calculator used the abacus.
This is what came with bonus features include an abacus app.
It was popular, so we separated it into another application.
Move the decimal point to the light.
The background is red and becomes negative results.
Just glanced from the side does not care about the human eye can not read the numbers around it, enjoy the computation.
Numbers can be checked by viewing the log later.