Question

please answer these questions​

Answer 1

1. Abacus was invented in China.
2. Blaise Pascal invented the calculating machine Pascaline.
3. Pascaline is believed to be the first mechanical calculator of the world.
4. Leibniz invented the digital mechanical calculator Step Reckoner.
5. Lady Ada Lovelace is known as the first computer programmer in history.

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Answer 2

Answer:

Explanation: 1. China

                      2. Blaise Pascal

                      3. Pascaline

                     4. Leibneiz

                     5.  Lady Ada Lovelace