AllTheTimeWorld.com

Number Systems: Decimal, Binary, Hexadecimal, RGB Colors

Learn Computer Concepts in FREE step-by-step lessons.

Number Systems: Decimal, Binary, Hexadecimal, RGB Colors

Understand the different number systems used by computers and how to convert from one notation to another.

In order to do this you will:

• Use number systems and convert from one number system to another, Learning outcome #4;
• Convert binary to decimal;
• Convert decimal to binary;
• Convert Hexadecimal to decimal or binary;
• Determine the color from an RGB value;
• Be able to read and write a number using scientific notation.

Print the lesson

Please study the material at each of the links below.

1. Number systems: grouping: Quantities can be grouped in different ways.
   
   

2. Decimal system: The decimal system is base 10.
   
   
3. Binary Numbers: 0 and 1: The binary system is base 2
   
   
4. Video: Convert binary to decimal: This video demonstrates how to convert binary numbers to decimal
   
   
5. Drill: Convert binary to decimal: Practice converting binary numbers to decimal
   
   
6. Convert decimal to binary: This video demonstrates converting decimal to binary.
   
   
7. Drill: Convert decimal to binary: Practice converting binary numbers to decimal
   
   
8. Hexadecimal Numbers: Base 16: 4 binary digits can be represented by 1 hex digit.
   
   
9. Decimal, Binary and Hexadecimal: Conversion table
   
   
10. Converting Binary to Hexadecimal: This video demonstrates converting binary to hex.
    /computers/videos/binary-hex.mp4
    
11. Drill: Convert binary to hexadecimal: Practice converting binary to hexadecimal
    
    
12. Converting Hexadecimal to Binary: This video show how to convert binary to hexadecimal.
    /computers/videos/hex-binary.mp4
    
13. Drill: Convert hexadecimal to binary: Practice converting hexadecimal to binary.
    
    
14. RGB Colors: RGB stands for Red, Green, Blue. It is used to represent colors. Be sure to experiment with the sliders.
    
    
15. Scientific notation: Very large or small numbers are often displayed in this format.
    
    
16. How to Write Decimals in Scientific Notation
    
    
17. What does e mean?
    
    
18. Drill: Value of e notation: Practice writing e notation in normal format.
    
    
19. A Magic Trick using binary numbers (PDF file to download): Just for fun, print on heavy paper, cut out and enjoy!
    
    
20. Self Study Questions: What do you know about the number systems used in Computer Science?
    
    
21. Self Study Questions
    
    
22. Discussion Questions