1, analysis
The highest dial 1 lower bead, the lowest dial 1 upper bead and 4 lower beads, and the tenth dial 2 lower beads. This number is 1029.
On the abacus, 1 upper bead stands for 5, 1 lower bead stands for 1. In order to minimize this nine-digit number, dial 1 at the highest position, then dial 1 at the lowest position for the upper bead and 4 beads, and dial 2 beads at the tenth position.
2. Introduction to abacus
Abacus is a calculation tool used since ancient times. This was used in ancient times, centuries before the Arabic numeral system was adopted. The exact origin of the abacus has not yet appeared. It is made up of rows of movable beads or similar objects strung in a line. They represent numbers. Set one of two numbers, and then manipulate the beads to perform addition, even square root or cube root operation.
In their earliest design, rows of beads can be loosely placed on a plane or slide in grooves. Later, the beads were made to slide on the rods and embedded in the frame, so that they could be manipulated more quickly. The abacus is still being made, usually with a bamboo frame and beads sliding on the wires.
Function of abacus
Basic mathematical calculation:
The most basic use of abacus is mathematical calculation, including addition, subtraction, multiplication and division. Abacus can help many mathematical operations, especially without calculators or electronic equipment.
Education:
Abacus is often used in teaching, especially among beginners of mathematics. It can help students understand mathematical concepts and strengthen their computing ability.
Business and finance:
In some commercial and financial fields, abacus is still widely used, especially in some traditional markets and small shops. It can be used to calculate prices, currency exchange and financial statements.
Timing:
Abacus can also be used for timing, especially in some traditional timing activities, such as Go and Chess. Art and culture: In some cultural traditions, abacus is used to create works of art and display skills. It can be regarded as a symbol of traditional culture.