The Evolution of Portable Music and Remote Control Technology

What was the primary innovation of the Walkman when it was first introduced?

• It allowed people to watch movies on the go.

• It enabled people to listen to recorded music while walking.

• It was the first device to use digital music files.

• It could store thousands of songs in a small device.

How does a cassette tape store sound?

• Through a series of grooves etched into the tape.

• By converting sound waves into light signals.

• By using digital signals stored on a microchip.

• By aligning magnetic particles on a tape using a magnetic field.

What was the role of the tape head in a cassette player?

• To amplify the sound signal

• To convert sound into light signals

• To create a magnetic field for recording sound

• To play back digital music files

What was a major limitation of infrared remote controls?

• They could only control one device at a time.

• They were too expensive to produce.

• They required a direct line of sight to the receiver.

• They could not be used in daylight.

What technology allows modern remote controls to work without direct line of sight?

• Laser beams

• Ultrasound waves

• Infrared waves

• Radio waves

What is a potential future development in remote control technology?

• Using voice commands exclusively

• Returning to wired connections for reliability

• Integrating with virtual reality headsets

• Employing motion sensors to capture gestures

How do radio waves improve the functionality of remote controls compared to infrared?

• They are more secure from interference.

• They require less power to operate.

• They can pass through walls and obstacles.

• They are cheaper to produce.