Exp CS B Unit 1 Lessons 1-2

Which electronic device replaced this technology?

• smartphone

• calculator

• computer monitor

• operating system

What is the name of the first computer?

• Scientific calculator

• Tabulating machine

• IBM

• Harvard Mark I

What kind of material are transistors made of?

• Alkali earth metals

• nonmetals

• metals

• semiconductors

What is the name of the law that describes how the number of transistors that fit on a microchip doubles every 2 years?

• Copernicus' Law

• Pascal's Law

• Moore's Law

• Newton's Law

___ involves removing unnecessary details in order to make something easier to use.

• Abstraction

• Clarification

• Simplification

• Calculation

Abstraction hides the details of ____ systems.

• more complex

• simpler

• visual

• logical

Facial recognition is a form of abstraction.

• True

• False

A flashlight contains an electrical circuit made up of a battery, wires, a bulb, and a switch. When the switch is on, the circuit is completed, generating an electric current, and the bulb lights up. When the switch is off, the circuit is incomplete, and the bulb is dark. Which statement about the flashlight is true?

• The flashlight is not a computer because it does not contain microchips or a monitor.

• The flashlight is not a computer because it does not store and process data.

• The flashlight is a computer because it receives data as an electric current and outputs light.

• The flashlight is a computer because the switch processes data about the electric current.

What is the object that allows information to flow from input devices to storage and output devices?

• Motherboard

• Battery

• Processor

• RAM

Which part is the processor?

• Hard drive/storage

• CPU

• GPU

• RAM