The Abacus this is about abascius the firs t.pptx

The Abacus this is about abascius the firs t.pptx

1. The ABACUS MADE BY ABDUL MOIZ IQBAL

2. CONTENTS What is an Abacus? History of Abacus How to use an Abacus Advantages of Abacus at that times Advantages of Abacus Now a times Disadvantages of Abacus Abacus unforgettable

3. What is an Abacus An Abacus is the first counting machine. T hat was in use centuries before when the numeral system was not introduced and It is still used in different purposes. It is made of a wooden frame, metal rods, and wooden beads.

4. History of Abacus The Abacus may have been invented in China in fourth hundred b.c . Abacus come from the Greek word “ABAX”, which means calculating table.

5. How to use an Abacus

6. Advantages of Abacus at that times Made counting easy and faster. Made easy to remember. Help them to done basic arithmetic operation like addition , subtraction , multiplication and division.

7. Advantages of Abacus Now a times Helps kids learn basic number systems. It helps blind children's in their Airthematic studies. Chinese and Japanese are still using abacus as an counting machine.

8. Disadvantages of Abacus Unlike a calculator it can only be used for Addition subtraction, division and multiplication. Because counters are manually moved, its hard to tell if you make a mistake.

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