Fill in the blanks.

1. __________________ was made up of wooden frame with several rods having beads.
2. John Napier invented __________________.
3. The brass rectangular box, called a __________________ , used eight movable dials to add up to eight digits.
4. Leibniz's mechanical multiplier worked by a system of __________________.
5. __________________ is known as the father of the computer.

Write True or False.

1. Abacus is an early aid for mathematical computations.
2. John Napier invented Pascaline to add up to eight digits.
3. Gottfried Wilhem Von Leibniz improved the Pascaline, by creating a machine that could also multiply.
4. Babbage proposed a steam driven calculating machine, called Difference Engine.
5. In the Analytical Engine, the presence or absence of each hole in the card physically allows a coloured thread to pass or stops that thread.

Multiple Choice Questions (MCQs).

1. The two main parts of Abacus frame are ________________ and ________________.
   1. input, output
   2. Earth, Heaven
   3. rod, beads
2. In a modern computer, the store and mill are called the ________________ and the ________________.
   1. memory unit, CPU
   2. storage, weaver
   3. output, input
3. ________________ the first computer programmer.
   1. Blaise Pascal
   2. Augusta Ada
   3. John Napier
4. ________________ was the first general purpose electronic digital computer.
   1. ENIAC
   2. UNIVAC
   3. EDVAC
5. ENIAC was invented by ________________ and ________________ in 1946.
   1. John Judson, Presper Eckert
   2. John Mauchly, Presper Eckert
   3. John Mauchly, Presper Aickew

What is Abacus? What could it do?

What was the contribution of John Napier?