Soromatic is the virtual form of Menar abacus. It is also called Virtuacus.You can enter or delete numbers simply by clicking the beads to turn them on and off. Clicking the "Reset" button on the beam will clear the abacus and make it ready for a new number or calculation. However, before clicking any beads, you are recommended to identify the unit rod first by clicking one of the small circles on the beam. This will be explained in the paragraph titled UnitRod.
ToggleNumerals: By default, there is a line of zeros just above the abacus which will translate the bead values into numerals. You can toggle numerals on and off by clicking this button.
UnitRod: In order to precisely figure out the value of a number on the abacus, one needs to know which rod is the Unit Rod (ones rod) which will be a reference to identify the place value of any other rod. Once it is selected, any number on the unit rod takes a value from 0 to 9. Place values of other rods are identified in reference to the unit rod. The rods from the immediate left to further left will be "Tens", "Hundreds", "Thousands" etc. The rods to the right of the unit rod represent decimal digits. If your numerals line is visible above, you will see a comma appear as the decimal separator to the very right of the unit rod the moment you click on one of the small circles on the beam to select .
If, in your country, a point, not comma, is used to introduce the decimals, you can change it by clicking the ToggleDcmlMark button.
Isn't it possible to make calculations on the abacus without specifying a unit rod? Yes, it is possible. In this case the rightmost rod is assumed the unit rod. The second rod from the right is the tens rod and the third is hundreds rod and so on. You will need to use the rightmost section of the abacus.
An important issue here is that you cannot make calculations with decimal numbers, as you don't have any rods for decimal digits to the right of the unit rod.
ToggleReferences: This button is used to hide or show the reference numbers located on the upper frame of the abacus. By default they are visible, but actually you will not need them when you are working on addition and subtraction. You might use them during multiplication but you will absolutely need them while learning division. They will make it easy for you to understand the procedures for division. Until then, you can keep them hidden or just ignore them.
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Learn Menar Abacus