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hello everyone here we have abacus video tutorial
in this tutorial we are going to see what is abacus and how to use it.
how it is used for calculations like
addition and subtraction multiplication and division
and we are going to learn
the structure of abacus and how the values are
set and reset in this abacus
in the basic structure of this abacus
you can see there is a frame which is having two parts
one upper part and and lower part
on the upper part you can see
one bead each beam
and at the lower, you can see four beads each beams
the beads on the top
area is called the heaven bead
and the once at the bottom is called earth bead
there will be for
earth beads in each beam
in the abacus all the heaven beads moved towards the
top area
and all the earthen beads moved towards down area
then the abacus is reset or
the value in the abacus is zero
which is more or less
similar to a calculator with a value
zero showing in it
Each of the heaven beads are having the value five
and each of the earthen beads are having the
value one.
and also the values of the beads depends upon the
position of road in which it is existing
existing that means the value from
left to right it is increasing
the roads are units tens hundreds in thousands etc.
that means the unit roads
each of the unit road in the earthen beam art will be having
one value each and the value of the
earthen beads of the 10
each will be having value 10 each when it is set
at the same time heaven beads to set it
it should come down and it should be more up
to reset here we have an example
now abacus is set to one the value of abacus is set to one by moving
one earthen bead
to up, now it is one
one is represented in the abacus
and the movement is done
in the units road. now the abacus is cleared. by moving it down
and if you move two beads
towards the top then the value is two
all down, again clear
and if you move three beads from earthen beads
towards top and value is three
now clear and again to set for
move four beads to the top
in now for setting five
clear bacchus by a morning all the earthen birds
down and move heaven bead up
down to set five. for setting 6
we how to move both beads from heaven and earth
move the heaven bead to down to set five and
and one earthen bead up and totally we will be having the value
five plus one six
and for setting 7 5 plus 2
five from the top and two from the bottom set.
and total is seven
for 8, 5 plus 3
5 heaven and 3earth bead
5 from the heaven and 3 from earthen bead
and finally for 9 5 plus 4
that means for setting 9 we how to move the heaven bead down
and 4 up totally
5 plus 4 we will be getting a value
and this is the general way of
representation of values in an soroban abacus
and you can guess how
how we can set tens because
the units road is full by setting
the value 9 naturally we have to move to the
next right most road or
beam for setting that beatson it watch the
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