1. Sending Binary Messages
Internet Simulator

2. Think about our binary message devices
Device ≈ system
How did we determine which symbol meant which response?
We needed to know which signal meant A and which meant B
Establish a communication protocol
Decode the following message using flashlight device.
On = A Off = B

3. Flashlight Binary Signal Test
Message: Is there anything we need to consider when we send our binary message?

4. Bitrate
Bits over time is your Bitrate “That dog’s got some teeth on ‘em, he bitrate through that bone.” - Okay not like that  Let’s see just how fast can you and your partner share messages. How might this relate to the ‘real internet’ (not the simulator)?

5. Let’s Try an Internet Simulator
Once you have signed into code.org : Find the Internet Simulator You will need a partner for this activity You don’t need to sit directly next to them, but you may if you’d like.

6. What happened? You had to coordinate with your partner, correct?
You just created a protocol.
A set of rules governing the exchange / transmission of data between devices.
You had to establish the frequency of information
A bit rate (or bitrate) is the number of bits processed per unit of time.
8 bits / second
52 mbps

7. What happened?
Bandwidth - Transmission capacity measured by bit rate (how much can it hold at one time)
Latency - Time it takes for a bit to travel from its sender to its receiver
- Think of this as the quality of your connection
- A low latency is better (lower time for data to transmit)
- A higher latency may cause ‘lag’ or delay.