Analogue data and digital data

Which of these are represented as analogue data?

• Shade on a sun dial

• Lines on a vinyl record

• Sound of our voices

• Sound from a acoustic instrument like a guitar

What is used to represent analogue sound as digital data?

• The changing process

• The sampling process

• The testing process

• The sound process

Sampling is where hardware, such as a microphone, measures the sound level several times per second and records this as __________ digits.

An analogue-digital (A/D) converter is an __________ circuit that converts continuous signals into discrete digital numbers

A digital-analogue (D/A) converter is an electronic circuit for converting a digital signal to an __________ signal (current, voltage or electrical charge)

What is digital data is a combination of?

• 1 and 0

• 1 and 2

• 2 and 3

• 3 and 4

Black and white bitmap graphics use bit (1 or 0) to represent white (0) and black (1) dots. What are the dots are called?

• Particles

• Paper

• Pixels

• Paint

________ graphics are another form of graphic representation. These images do not store the data by pixels but are a set of instructions for drawing a geometric shape.

How many bits are in a byte?

• 4

• 6

• 8

• 10

Who is the best F1 driver?

• Max

• Alonso

• Lewis

• Lando