Soroban 1.30
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.
Ссылка: http://hp.vecto../VA041064/software/Soroban_en_130.zip
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.
Ссылка: http://hp.vecto../VA041064/software/Soroban_en_130.zip
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