1. Binary Number System Lesson objectives:
Identify binary numbers and what they represent.
Recognize that computers process data based on binary numbers: 0’s and 1’s.
Describe how to count in binary numbers.
Explain how to convert decimal and binary numbers

2. Video: Journey Inside
Watch the 5 minute video

3. Why does the computer use 0’s and 1’s to store data?
Round robin activity

4. What is Binary Code?
Computers use a special code of their own to express the digital information they process.
It's called the binary code because it consists of only two symbols—0s and 1s. (The "bi" in "binary" means two.)

5. Ever heard of Morse Code?
Watch the short video.

6. What is Morse code?
Morse code is a method of transmitting text information by using a series of on – off tones, lights or clicks.
Each character is represented by a unique sequence of dots and dashes.

7. The J-38, straight key
This was manufactured in large quantities during world war 2

8. The characters available

9. How to convert from Decimal to binary:
Divide by 2 and write the remainder.

10. The whole picture

11. Solve the worksheet using Rally Coach
Show your working!

12. Answers
101010
11001
1111

13. Write a program in Java to convert from Dec to Bin.
Using the mod operator (%) you can get the remainder.
Store it in a integer type variable.
Add it to a string type variable by using concatenation.

14. String type data type This is how you declare a string variable.
String myBinNumber=“”;
String myAddress=“24 Shouk, Mirdiff”
myAddress=myAddress + ” UAE”