1.
Binary Code

2. What is Binary Code?
Code used to express digital information that computers process
Consists of only 2 symbols
0’s & 1’s

3. What is Binary Code?
The 2 digits express the flow of electricity through transistors (or switches)
Computers are made up of millions of electronic switches

4. What is Binary Code?
Switch can be either OFF or ON
0 = OFF
1 = ON

5. What is Binary Code? Binary Digit  BIT
Each digit, a 1 or 0, is called a BIT
8 bits are called a BYTE
1 gigabyte ≈ 1 billion bytes ≈ 8 billion bits

6. Examples of 8-bit Binary Numbers

7. Practice
57 = _ _ _ _ _ _ _ _
32 = _ _ _ _ _ _ _ _

8. Practice
________ =
________ =

9. ASCII American Standard Code for Information Interchange
Alphabet in Binary
ASCII is an 8-bit code

11. Practice ASCII Code Sheet Handout
Use what you’ve learned about Binary Numbers to complete the ASCII worksheet.