3. Hardware - Input & Output Devices: Computer Science CIE IGCSE

How many input devices do humans use?

(a)  

Select the input devices

• Barcode scanner

• Digital camera

• keyboard

• actuator

• DLP projector

Select the input devices

• microphone

• optical mouse

• QR code scanner

• injet printer

• laser printer

Select the input devices

• touch screen

• 2D scanner

• 3D scanner

• LED screen

• speaker

Carries out small, very dedicated processes

• microprocessor

• embedded system

• integrated circuit

• actuator

Captures an image in a digital camera

• CCD

• CIR

• Lens

• ADC

What does CCD stand for?

• Charge Couple Device

• Capacitive Crystal Display

• Cloned Covered Denary

• Colin Creevey Dances

Made up of hundreds of sensors that act as photodiodes

• LCD

• CCD

• LED

• ADC

What is a sensor in a CCD called?

• Microprocessor

• Photodiode

• Pixel

• LED

Increasing the number of pixels...

• Increases image quality

• Decreases image quality