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100

In what year was the abacus?

2700-2300bce

200

Who invented the pascaline?

Blaise Pascline

300

What year did Joseph marie Jacquard invent the punched card control looms?

1804

400

Who is the father of computers?

Charles Babbage

500

Who discovered the first computer bug?

Rear Admiral,DR.Grace,Murray Hopper