Analog Vs. Digital Signal

What is a key characteristic of analog signals?

• They are composed of discrete units like 1s and 0s.

• They use a continuously changing 'thing' to represent data.

• They are immune to interference.

• They can be perfectly replicated without degradation.

What is a significant drawback of analog technology?

• It requires complex conversion processes.

• It cannot transmit data over long distances.

• It is highly susceptible to interference.

• It is incompatible with older electronic devices.

How does digital technology represent data?

• Through continuously variable wave heights.

• As clear-cut, discrete units of ones and zeros.

• By modulating frequency and amplitude simultaneously.

• Using perpetually moving second hands.

What is the process called when an analog signal is converted into digital bits by taking snapshots?

• Modulation

• Demodulation

• Sampling

• Amplification

Why do you think that in 2009, the United States switched from analog signal to Digital signals?