There was a time in the ancient period when
number never existed and people used to count
using their fingers and toes. However, the
merchants of that period needed a counting
device to calculate the inventories of the items
that they bought and sold. These difficulties
lead to the invention of several counting
devices which assisted in working out large
numbers. Abacus is one of those counting
devices.
Abacus is a Latin word that has originated from
a Greek word 'abakon' or 'abax', meaning
"tablet" or "table". This Greek work, in turn,
is believed to have been originated from the
Semitic word 'abq', meaning "sand".
Like the counting boards, abaci are specifically
designed for counting. However, they differ from
the counting boards in many aspects. The
counting boards are pieces of metal, wood or
stone with carved grooves or painted lines
between which metal discs, beads or pebbles were
moved. The abaci are devices, usually made of
wood, which have a frame that holds rods with
freely-sliding beads mounted on them. Abaci are
not quite different from the modern
electromechanical calculators.
People use abacus to execute calculations in
their head and use the device as a physical help
to keep track of the sums, the carry-overs, etc.
Abaci are of different types. The Chinese abaci
are referred to as suanpan. The Japanese abaci
are referred to as soroban and the Russian ones
are called as schoty.
Even against the modern electronic calculators,
abaci prove to be a comprehensive tool for
simple arithmetic calculations. The simplicity
and the appearance of the device appear to
children just like another of their toys. As a
result the children never feel bored while doing
calculations on it. Abaci sharpen children's
memory and enhance their ability to perform
mental calculations. With regular usage,
students can do the calculations without using
abaci, by just visualizing abaci in their minds.
The blind children who cannot perform
calculations on paper use abaci for calculation.
Abacus definitely comes as an ultimate
solution for the students to make accurate and
fast calculations.