History of computerNabia 4z

Scarsdale International School

Counting on fingers Since the earliest times people used their to show ‘how

many’. Thus they put tell the numbers of animals they have killed on a hunt. They cloud show the number of people living in a dwelling. It was easy to show large numbers in groups of t.en by holding up both hands

The abacus The abacus was the first calculating machine . It was

develop by the chines 5ooo years ago. It was built out of wood and beads. IT cloud be held and carried around easily . The abacus was so successful that It’s use spread from china to other country .

Napier’s Bones IN 1617 JOHN NAPIER INVENTED THIS MACHINE. IT WAS INTRODUCED TO MULTIPLY BIG NUMBERS.

Pascal’s Arithmetic Machine Some years later in 1642 a young French

Mathematician named Blaise Pascal was working in his fathers and he invented Pascal Arithmetic Machine.

Babbage engineThe first calculating machine that can be truly called a computer was invented in England by Charles Babbage in 1985.

Tabulating machineThis machine was make to count the population of people .