Flash Calc - It is the flash mental calculation software.
The flash mental calculation is the supreme mental calculation by the ABACUS.
Let's challenge the flash mental calculation by this program.
Feature
- The image of bead can be used instead of number.
- A font can be changed.
- A character color and a background color can be changed.
- It can challenge the certificate examination.
- Since the character is large, an eye does not get tired.
