Input Devices And Their Uses
Bayani Gaba-gaba
Every time you tap a screen, press a key, speak to a voice assistant or let a thermostat read the room, you are feeding data into a computer. None of the clever processing inside a machine can begin until data has been captured from the outside world, and that is exactly what input devices do. From the humble keyboard to the temperature sensor buried in a greenhouse wall, each device is built for a particular job, with its own strengths and its own weaknesses.
In this lesson you will meet the full family of input devices the Cambridge syllabus asks you to know: keyboards and keypads, pointing devices, remote controls, joysticks and driving wheels, touch screens, scanners, cameras, microphones, sensors and light pens. More importantly, you will learn to choose the right device for a given situation and to justify that choice in exam terms, weighing speed, accuracy, cost and ease of use against one another.
Manufura
- Input devices.
- Characteristics, uses, advantages and disadvantages of input devices including: keyboard, numeric keypad, pointing devices, remote control, joystick/driving wheel, touch screen (as an input device), scanners, camera, microphone, sensors, light pen.
Takardar Darasi
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- Which one of the following is an input device? A. Laser printer B. Speaker C. Microphone D. Plotter Answer: C
- A device that measures a continuously changing physical quantity such as temperature is called a: A. Scanner B. Sensor C. Light pen D. Trackerball Answer: B
- Which pointing device is most suitable for a user with limited wrist movement? A. Mouse B. Joystick C. Trackerball D. Driving wheel Answer: C
- Which input device can also act as an output device? A. Keyboard B. Touch screen C. Scanner D. Microphone Answer: B
- Sensor data must be converted before a computer can use it. Which component does this? A. DAC (digital to analogue converter) B. ALU (arithmetic and logic unit) C. ADC (analogue to digital converter) D. RAM (random access memory) Answer: C
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Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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