Correct option is B
The Abacus is considered the first counting tool developed by humans. It was used for performing basic arithmetic operations like addition, subtraction, multiplication, and division.
- The Abacus dates back to around 2400 BCE and was first used in Mesopotamia.
- It consists of a frame with rods and sliding beads, which represent units, tens, hundreds, etc.
- It remained a fundamental tool for calculations for centuries, especially in regions like China and Japan.
Important Key Points:
- Abacus:
- A simple, mechanical counting device used for manual calculations.
- It paved the way for modern computational tools.
- Importance of the Abacus:
- It introduced the concept of place value and organized counting.
- Even today, it is used for teaching basic arithmetic concepts.
Knowledge Booster:
- Option A: Aba Zaba
- Incorrect: This is not related to counting tools; it refers to a candy brand, not a historical device.
- Option C: Punch Card
- Incorrect: Punch cards were used for storing and processing data in early computers, introduced in the 19th century.
- Option D: Stepped Reckoner
- Incorrect: The Stepped Reckoner was a mechanical calculator invented by Gottfried Wilhelm Leibniz in 1673, long after the Abacus.