Evolution of Computers — Flashcards
ICSE · Class 5 · Computer Studies
30 flashcards for Evolution of Computers (ICSE Class 5 Computer Studies) to test yourself on key terms and facts.
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Who is known as the Father of Computers?
Answer
Charles Babbage is known as the Father of Computers. He designed the Difference Engine and the Analytical Engine in the 1800s, which were early models of computers. Though they were never fully built …
What is an Abacus and who invented it?
Answer
The Abacus is the first calculating device, invented by the Egyptians and later improved by the Chinese and Japanese. It has beads on rods that help in counting and doing simple math. It is still used…
How does an Abacus work?
Answer
An Abacus has a wooden frame with vertical rods and beads. The top row (Heaven) has 2 beads, each worth 5. The bottom row (Earth) has 5 beads, each worth 1. By sliding beads toward the middle bar, we …
What were Napier’s Bones used for?
Answer
Napier’s Bones were a manual calculating device invented by John Napier in 1617. They were rods with multiplication tables that helped in multiplying, dividing, and finding square roots by turning com…
Who invented the first mechanical calculator and what was it called?
Answer
Blaise Pascal, a French mathematician, invented the first mechanical calculator in 1642. It was called the Pascaline or Pascal’s Adding Machine. It could only do addition and subtraction but was autom…
What was special about Leibniz’s Stepped Reckoner?
Answer
Gottfried Leibniz invented the Stepped Reckoner in 1673. It was an improved mechanical calculator that could perform all four operations: addition, subtraction, multiplication, and division. It was ba…
What is a punched card and who first used it in machines?
Answer
A punched card is a card with holes that represent data or instructions. Joseph Marie Jacquard first used punched cards in 1804 in his weaving loom, the Jacquard Loom, to control patterns. This idea l…
Why is the Jacquard Loom important in computer history?
Answer
The Jacquard Loom is important because it was the first machine to use interchangeable punched cards to control its actions. This idea of using cards to give instructions was later used in early compu…
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