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Exploring Computer Science
(Part 1: History)
Kansas 4-H Discovery Days 2014
How?
How can we make things:
- Faster?
- Better?
- More efficient?
- More accurate?
- More secure?
Images from Wikimedia Commons
Image from Wikimedia Commons
John Napier - log Jacob Bernoulli - e
Image from Wikimedia Commons
Divided Differences
Sir Isaac Newton
Image from Wikimedia Commons
Divided Differences
P(x) = 2x2 - 3x + 2
| x |
P(x) |
D1(x) |
D2(x) |
| 0 |
2 |
-1 |
4 |
| 1 |
1 |
-3 |
4 |
| 2 |
4 |
7 |
*4* |
| 3 |
11 |
*11* |
4 |
| 4 |
*22* |
15 |
4 |
| 5 |
37 |
19 |
4 |
Computer (noun):
A person who makes calculations
Image from Wikimedia Commons
Charles Babbage
Image from Wikimedia Commons
Difference Engine
Image from Wikimedia Commons
Antikythera Mechanism
Image Source: Wikipedia
Analytical Engine
Image from Wikimedia Commons
Input Cards
Image from Wikimedia Commons
The Mill
Image from Wikimedia Commons
Father of the Modern Computer
The Store
Image from Wikimedia Commons
Break Time!
- How does a computer know what do to when we give it commands?
- What happens when we tell a computer to sort a list?
- Do computers sort things differently than a human does?