# Number Systems: Decimal, Binary, Hexadecimal, RGB Colors

In this lesson you will learn about computer number systems.

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1. Data In The Computer
2. Number systems: grouping: Quantities can be grouped in different ways.
3. Decimal system: The decimal system is base 10.
4. Binary Numbers: 0 and 1: The binary system is base 2
5. Video: Convert binary to decimal: This video demonstrates how to convert binary numbers to decimal
6. Drill: Convert binary to decimal: Practice converting binary numbers to decimal
7. Convert decimal to binary: This video demonstrates converting decimal to binary.
8. Drill: Convert decimal to binary: Practice converting binary numbers to decimal
9. Hexadecimal Numbers: Base 16: 4 binary digits can be represented by 1 hex digit.
10. Decimal, Binary and Hexadecimal: Conversion table
11. Converting Binary to Hexadecimal: This video demonstrates converting binary to hex.
13. Converting Hexadecimal to Binary: This video show how to convert binary to hexadecimal.
15. RGB Colors: RGB stands for Red, Green, Blue. It is used to represent colors.
Be sure to experiment with the sliders.
16. Scientific notation: Very large or small numbers are often displayed in this format.
17. How to Write Decimals in Scientific Notation
18. What does e mean?
19. Drill: Value of e notation: Practice writing e notation in normal format.
20. A Magic Trick using binary numbers: Just for fun, print on heavy paper, cut out and enjoy!
21. Self Study Questions
22. Discussion Questions