COMPUTER HISTORY AND EVOLUTION
DEVELOPMENT OF COMPUTERS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
The Heaven part of Abacus has ____ beads on each rod.
|
|
two
|
|
|
three
|
|
|
four
|
|
|
all
|
|
|
none
|
Explanation:
Detailed explanation-1: -A horizontal crossbar perpendicular to the rods separates the abacus into two unequal parts. The beads above the crossbar are known as heaven beads, and those below the crossbar are called earth beads. The numerical value of each bead depends on its location in the abacus.
Detailed explanation-2: -The abacus we use currently has 17 rods and each rod has 5 beads. There are two divisions in an abacus. The horizontal bar that divides the upper and lower part is called the beam. The beads that are in the lower part are called the lower beads or the earth beads.
There is 1 question to complete.