How Computers Work

What is the primary function of the CPU in a computer system?

• To provide external storage

• To manage input devices like keyboard and mouse

• To execute instructions and process data

• To output data to the screen and printer

Answer explanation

The primary function of the CPU in a computer system is to execute instructions and process data, making it the correct choice among the options provided.

Which of the following is considered an output device?

• Keyboard

• Mouse

• Screen

• Chip

Answer explanation

The correct choice is 'Screen' because it is an output device that displays information to the user.

What role does binary code play in a computer system?

• It is used for creating graphical interfaces.

• It is the fundamental language computers use to operate.

• It is primarily used for internet communications.

• It is a type of virus protection method.

Answer explanation

Binary code is the fundamental language computers use to operate, representing data and instructions in a form that the computer can process.

Which component is essential for the 'Processing' stage in a computer system?

• Printer

• Screen

• Chip

• Keyboard

Answer explanation

The 'Chip' is essential for the 'Processing' stage in a computer system as it performs the actual computations and data processing tasks.

What is the function of the Control Unit in a computer's Central Processing Unit?

• It performs arithmetic and logical operations.

• It manages the flow of data within the CPU.

• It stores temporary data for quick access.

• It connects the computer to external devices.

Answer explanation

The function of the Control Unit in a computer's Central Processing Unit is to manage the flow of data within the CPU.

Which component is responsible for the temporary storage of data in a computer?

• Control Unit

• Arithmetic Logic Unit

• Memory (Temporary)

• Storage (Permanent)

Answer explanation

The component responsible for the temporary storage of data in a computer is Memory (Temporary). It stores data temporarily for quick access by the CPU.

What devices are considered part of a computer's Input Unit?

• Monitor, Printer, Speakers

• Mouse, Keyboard, Microphone

• Control Unit, ALU

• Hard Drive, SSD

Answer explanation

The devices considered part of a computer's Input Unit are Mouse, Keyboard, and Microphone.

Which of the following is an example of an Output Unit device?

• Keyboard

• Mouse

• Monitor

• Microphone

Answer explanation

The correct choice for an Output Unit device is a Monitor, as it displays visual output from the computer.

What is the primary function of a transistor in electronic devices?

• To amplify sound

• To act as a switch

• To store data

• To display images

Answer explanation

The primary function of a transistor in electronic devices is to act as a switch.

Which component of a transistor is responsible for turning the switch on and off?

• Collector

• Emitter

• Base

• Silicon chip

Answer explanation

The Base component of a transistor is responsible for turning the switch on and off by controlling the flow of current between the Collector and Emitter.