It is the desktop abacus of computer control.

If a numerical value character sequence with a operator is inputted,a computer will operate an abacus automatically. The flash mental calculation using the abacus is also possible.

Operation of the abacus of the wonderful speed by the computer is marvelous.
It is useful also to the study of the right abacus of operation.

Here are some key features of "Soroban":

· High-speed operation of the abacus by the computer can be performed.
· Multiple precision arithmetic of a maximum of 50 digits is made.
· Function calculation can be performed.
· A rod, a bead, etc. can be customized.
· A file is read and it calculates continuously.
· The flash mental calculation using the abacus can also be challenged.
· One's place can be moved freely.

Requirements:

· .NET Framework