25. How Semiconductors Power Our Modern World

According to the essay, what is the fundamental, primary role of a semiconductor?
1. To generate electrical power from sunlight.
2. To act as an electronic switch that turns on and off extremely quickly.
3. To store data permanently in devices like solid-state drives.
4. To connect radio signals for mobile internet.
The essay states that in computing, the "digital brain" is the Central Processing Unit (CPU). What makes up this "brain"?
1. A series of intricate sensors and radio chips.
2. A single, powerful semiconductor chip.
3. Billions of transistors that process instructions.
4. The memory (RAM) that stores temporary data.
Which of the following is NOT mentioned in the essay as a use of semiconductors in communication?
1. Managing radio signals for calls and internet in smartphones.
2. Powering the engines and safety systems in modern cars.
3. Operating the sensors that detect finger taps on a screen.
4. Functioning within Wi-Fi routers and networking base stations.
How are semiconductors used in the field of power and control, according to the passage?
1. They are used to manufacture the physical casings for medical devices.
2. They form the screen displays for laptops and smartphones.
3. They convert sunlight into electricity in solar panels.
4. They are the primary material for building internet cables.
The main idea of the essay is that semiconductors are indispensable because they:
1. are an interesting part of scientific history.
2. are inexpensive and easy to manufacture from silicon.
3. are crucial for computing, communication, and power/control.
4. will soon replace all other forms of technology.