Grade 7 Hardware Quiz

What is the purpose of an input device?

• To display information on screen

• To store data permanently

• To enter data into the computer

• To convert digital data into analog

Which input device uses LED and optical sensors to detect motion?

• Trackpad

• Optical Mouse

• Barcode scanner

• Microphone

What is the use of a QR code scanner?

• To scan fingerprints

• To scan barcodes only

• To scan matrix codes using smartphone cameras

• To scan paper documents

Which keyboard layout is most commonly used?

• ABCDEF

• QWERTY

• AZERTY

• DVORAK

Which touchscreen type can be used with gloved fingers?

• Capacitive

• Infrared

• Resistive

• OLED

What is the main disadvantage of capacitive touchscreens?

• They are not visible in sunlight

• They are slow to respond

• They do not work with gloved fingers

• They wear out quickly

Which device converts physical sound into digital data?

• Speaker

• Scanner

• Microphone

• Projector

What is the function of a 2D scanner?

• To measure light levels

• To scan barcodes

• To digitize paper documents

• To print documents

Where are 3D scanners commonly used?

• Libraries

• Airports for security scanning

• Cafeterias

• Smartwatches

What type of device is a sensor?

• Output

• Storage

• Input

• Processing