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→About Abacus
File:Custom-abacus.png|custom, as shown: octal (base 8)
File:Custom-abacus.png|custom, as shown: octal (base 8)
</gallery>
</gallery>
=== The toolbars ===
<Image:Abacus-main-toolbar.png|left>
From left to right:
:project-toolbar button
:saupan button (Chinese abacus)
:soroban button (Japanese abacus)
:schety button (Russian abacus)
:nepohualtzintzin button (Mayan abacus)
:binary button (binary abacus)
:hexadecimal button (hexadecimal abacus)
:customization-toolbar button
:stop button not shown
<Image:Abacus-custom-toolbar.png|left>
From left to right:
:select the number of rods
:select the number of beads on the top of the frame
:select the number of beads on the bottom of the frame
:select the multiplication factor of top beads (e.g., on the Chinese abacus, each top bead counts as 5× the value of a bottom bead on the same rod)
:select the base to determine the value of bottom beads across rods; this is 10 on most conventional abacuses, but 20 on the Mayan abacus and 2 on the binary abacus.
== How to use an abacus ==
== How to use an abacus ==