IGCSE CS Unit 3 Hardware

Which of these is a primary storage device?

• USB stick

• HDD

• RAM

• Blu-ray

During the fetch-execute cycle, which register holds the next instruction address?

• CIR

• MDR

• PC

• MAR

Which device converts audio signals into digital data?

• Speaker

• Scanner

• Microphone

• Camera

Which IP version supports the most devices globally?

• IPv4

• IPv6

• IPv2

• IPv5

Which printer uses toner and a laser beam?

• 3D printer

• Laser printer

• Inkjet printer

• Dot matrix printer

What component synchronizes all operations in the CPU?

• Control Unit

• Cache

• System Clock

• Register

Which memory type stores BIOS permanently?

• RAM

• Cache

• ROM

• SSD

Which software extracts text from scanned images?

• JPEG

• CAD

• OCR

• DLP

Which register keeps the instruction currently being decoded?

• MDR

• CIR

• PC

• ACC

Which register stores the memory address of the next instruction?

• CIR

• MAR

• ACC

• PC