Analogue and Digital Signals

What is the difference between analogue and digital data?

• Analogue is continuous data, whereas digital signals have two values, 0 and 1.
• Analogue has two values 0 and 1, whereas digital is continuous data.

Analogue signals can vary in amplitude or frequency

• True

• False

The height of a wave is called its frequency.

• True

• False

Is this an example of a digital or analogue format?

• Digital
• Analogue

Is this an example of a digital or analogue format?

• Digital
• Analogue

Needed so the computer can understand analogue sensor readings

• Digital to analogue converter (DAC)

• Analogue to digital converter (ADC)

• Sensor to digital conversion (SDC)

• Digital compression (DC)

I am the height of the wave. What am I?

• Amplitude

• Frequency

• Phase shift

• PCM

What is a method for turning analogue signals into digital?

• Defragging

• Pulse Code Modulation

• DAC

• Levelling

What is a phase shift?

• Height of a wave

• Number of cycles per second

• Time delay of a signal

• Noise

What is level shifting?

• Boosting a signal

• Changing signal voltage (up or down)

• Converting to analogue

• Converting to digital