Components of Computer MCQs with Answers

What is the primary function of the battery found on a computer's motherboard?

• A.Power the CPU during operation
• B.Save information when the computer is off
• C.Regulate voltage to the RAM modules
• D.Provide backup power to the hard disk drive

Past Paper MCQ

What is the short-term memory of a computer commonly referred to as?

• A.Cache
• B.ROM
• C.Hard Disk
• D.RAM

What is the name of the register that holds the memory address to access data in memory?

• A.Memory Address Register (MAR)
• B.Memory Buffer Register (MBR)
• C.Instruction Register (IR)
• D.Program Counter (PC)

What is the primary function of the Control Unit in a computer system?

• A.It converts input data into output
• B.It performs arithmetic and logical operations
• C.It stores data temporarily for processing
• D.It controls operations of different units

Who directs the operations of the Arithmetic Logic Unit (ALU) in a computer system?

• A.Output Unit
• B.Memory Unit
• C.Input Unit
• D.Control Unit

What category does the CPU fall under in computer terminology?

• A.Middleware
• B.Software
• C.Firmware
• D.Hardware

Which of the following devices is shown in the image along with a monitor, speaker, keyboard, and mouse?

• A.Central Processing Unit
• B.Printer
• C.Scanner
• D.Projector

Which component of a computer is responsible for converting raw data into meaningful information?

• A.Power Supply
• B.RAM
• C.Hard Disk
• D.Processor

When the CPU detects an interrupt, what does it save to handle the interruption properly?

• A.Accumulator Value
• B.Program Counter Only
• C.Current State
• D.Memory Address Register

Microcontrollers typically integrate several components; which of the following is least likely to be separate in such devices?

• A.I/O Ports
• B.CPU Core
• C.RAM
• D.Memory Management Unit (MMU)