Computer System and Devices

Which component is often considered the "brain" of a computer system?

• Motherboard

• CPU

• RAM

• Hard Disk Drive

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

• Running application programs

• Managing peripheral devices

• Controlling user access

• All of the above

Which type of memory is non-volatile and retains data even when the power is off?

• RAM

• ROM

• Cache

• Flash

What role does the Expansion Bus play in a computer system?

• Connects CPU components

• Links CPU with other hardware

• Manages file storage

• Controls peripheral devices

Which device is responsible for converting standard house power into DC voltages used by other components in a PC?

• Optical Drive

• Power Supply Unit (PSU)

• Hard Disk Drive (HDD)

• Motherboard

What is the main function of a graphics drawing tablet, also known as a digitizer tablet?

• Reading barcodes

• Sketching and drawing

• Optical character recognition

• Voice recognition

Which type of monitor technology is characterized by its use of liquid crystals and is commonly found in laptops?

• CRT Monitors

• LCD Monitors

• LED Monitors

• OLED Monitors

What is the primary purpose of a Smart Board in a computer system?

• Audio recording

• Display screen with touch sensitivity

• Barcode scanning

• Hard disk storage

Which input device allows a user to interact with a computer by touching the display screen directly?

• Mouse

• Keyboard

• Touch screen

• Light pen

What is the purpose of an optical drive in a computer system?

• Data storage

• Audio Input

• Display Output

• Barcode Reading