Savvas Topic 7: Information Technologies

Front

What type of information does a doorbell share?

Back

That someone is at the door.

Front

How did the electrical telegraph transmit information?

Back

through the use of wave pulses as dots and dashes

Front

How are letters transmitted in morse code?

Back

different combinations of dots and dashes

Front

What does EM stand for?

Back

Electromagnetic

Front

Describe the speed of EM signals.

Back

The speed of light

Front

How do analog signals record?

Back

they continuously record some kind of action

Front

How do digital signals record?

Back

they continuously record numerical values at a set of continuous intervals

Front

Choose one advantage of analog signals.

Back

high resolution through continuous recording

Front

Disadvantage of analog signals.

Back

hard to record/ take up a lot of space (technically two, I know)

Front

Disadvantage of digital signals.

Back

data can be missed between intervals