Unit 3 Lesson 4 Information Transfer

Front

What is coding?

Back

The process of writing a computer program in a language that can be used by a computer.

Front

What is a form of communication over long distances used by Native Americans and Chinese soldiers?

Back

Smoke signals.

Front

What device is used by computers to send and receive information?

Back

Modem.

Front

What is a code that transfers information using a pattern created in black squares on a white background that is machine readable?

Back

QR code.

Front

What invention made it possible to communicate across long distances with electricity and Morse code?

Back

Telegraph.

Front

What is Morse code?

Back

A system of dots and dashes used to represent letters and numbers for communication.

Front

What is a modem?

Back

A device that modulates and demodulates signals for data transmission over telephone lines.

Front

What does QR stand for in QR code?

Back

Quick Response.

Front

What is the purpose of a telegraph?

Back

To send messages over long distances using electrical signals.

Front

What is binary code?

Back

A system of representing text or computer processor instructions using the binary number system, which uses only two symbols: 0 and 1.