2 INPUT AND OUTPUT DEVICES Five devices me thom on the let and five decriptions are shown on the rig t By drawing lines connect each device to is correct description Inkjet printer Display that uses light modulating properties of crystals 2 LCD screen Image from a source is magnified and shown on a large screen 3D printer Droplets of ink are ejected onto a sheet of paper Digital projector Electrically charged powdered toner is melted 4 onto paper Laser printer Produces solid objects using CAD software 10 5 Which ten computer terms are being described below a A matrix of filled in dark squares on a light background read using a smartphone camera or tablet using an app b A device that can read marks written in pen or pencil the pencil or pen marks must be made in the correct position C An input device that takes physical readings from the surroundings and sends the data back to a computer An input device that converts sound into electric signals that can be stored digitally on a computer e A device that converts a photograph or document into a computer readable file A device used to control the operation of other electronic devices using infrared signals 9 A direct data entry device that uses radio waves to read and capture information stored on an electronic tag h A device that produces very high quality hard copy output uses dry ink cartridges and an electrically charged drum i A device that prints by impacting a print head made up of an array of pins against an inked ribbon i A pointing device that moves around on a surface in an X Y direction to control a cursor on a computer screen 6 a i Describe how a QR reader works ii What are QR codes used for b Give two advantages and two disadvantages of using QR codes c A touch screen can be used as both an input device and an output device Explain how this is possible 7 Give a use for each of the following input and output devices a Keyboard f Touch screen b Driving wheel or joystick g 3D printer c QR code reader h Dot matrix printer d Barcode reader i RFID e Microphone j chip and PIN reader 4 4 2 10 58