Binary Messages: Sending Secret Signals

Learning Objectives Define 'binary' as a language with two symbols, 0 and 1. Explain that computers use binary to represent information like letters and numbers. Use a provided key to encode a letter into its binary representation. Use a provided key to decode a binary representation back into a letter. Create a short, 2-3 letter secret message using a binary alphabet key. Describe how binary is like an 'on' and 'off' switch. Have you ever wanted to send a secret message that only a computer could understand? 🤫 Let's learn the computer's secret language! Computers have a special language called binary that uses only two numbers: 0 and 1! Today, we will learn how to read and write this secret code to send messages, just like a compute...

TermDefinitionExample BinaryA language that uses only two symbols to represent information. These symbols are 0 and 1.The code `0100` is a binary code. BitA single piece of binary information. It is either one 0 or one 1.In the code `0100`, the number `1` is one bit. CodeA set of rules used to change information from one form to another, like turning letters into binary.Our secret code rule is that the letter 'A' is `0001`. EncodeTo change a regular message into a secret code.We can encode the letter 'C' into the binary code `0011`. DecodeTo change a secret code back into a regular message that you can understand.We can decode the binary `0010` to find out it means the letter 'B'. Binary Alphabet KeyA chart that shows the matching binary code for each letter...

The On/Off Rule 1 = ON, 0 = OFF Think of each bit as a tiny light switch. A '1' means the switch is ON, and a '0' means the switch is OFF. Computers use millions of these tiny 'on' and 'off' switches to work. The Letter-to-Code Pattern Each letter has its own unique binary code. To encode or decode a message, you must use a Binary Alphabet Key. You look for the letter to find its code, or you look for the code to find its letter. You must match them exactly!