(a) What are input devices?
(b) list two input devices
(c) State two uses of logic gates
(d) Draw and label the logic gate symbol for;
(i) OR gate (ii) AND gate
a) Input devices are peripherals/ hardware / devices Connected to the computer that are used to send data I information/ signals/ commands to the computer system.
OR
Input devices are peripherals / hardware/devices that allow users to interact with/control the computer sys- tem/computer / digital electronics machine.
(b) Examples of input devices
(i) Keyboard / MIDI keyboard (ii) Light pen / pen-input (ii) Mouse (iv) Joystick (V) Scanner (vi) Cameras/Digital camera/Webcam (vii) Microphone (Viii) Card reader (ix) Fingerprint scanner/ Reader (x) Trackball (x) Magnetic-stripe reader (xi) Bar code reader (xi) Touch pads (xiv) Electronics whiteboard (xv) Optical Mark Recognition (OMR) (xvi) Optical Character Recognition (OCR) (xvii) Magnetic Ink Character Reader (MICR) (xvili) Magnetic tape drive (xix) Punch card reader (xx) Game pad.
(c) Uses of Logic Gates
(i) It is the building blocks of digital electronic (i) It is used in.constructing alarms (iii) It is used as a decision making tool (iv) It is used in push-button lock circuit (v) It is used for traffic light controller (vi) It is used in light activated burglar (vii) It is used in safety thermostat, an automatic water ing system (viii) It is used in the Arithmetic and Logic Unit (ALU) (ix) It is used to build digital and complex integrated circuits (x) It is used in error checking in FM transmission.
(d)) OR LOGIC GATE
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