ict - igcse

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ICT - IGCSE

INPUT, OUTPUT and STORAGE

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Input Devices• Are parts of the hardware system that allows the

users to GIVE information to our computers.

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Input Devices - Sensors

Temperature Sensor • Used in:

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Input Devices - Sensors

Pressure Sensor • Used in:

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Input Devices - Sensors

Light Sensor • Used in:

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Input Devices - Sensors

Motion Sensor • Used in:

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Input Devices - Sensors

Graphic Tablet and Light Pen • Used in:

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Input Devices - Sensors

Optical Mark Reader and Optical character reader

• Used in:

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Input Devices - Sensors

Bar code reader and RFID (Radio Frequency

Identification)• Used in:

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Input Devices - Sensors

Video Camera and Webcams

• Used in:

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Output Devices

Monitors (CRT and FTF)

The Cathode Ray Tube (CRT) is a vacuum tubeThin film transistor liquid crystal display (TFT-LCDLight emitting diode (LED)

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Output Devices

Multimedia Projectors

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Output Devices

Printers

Dotmatrix:

Use where noise is not an issue and copies needs to be made. Laser:

Use where application require low noise and low chemical emission and high quality output.

Inkjet:

Use where application require portability and low volume printout, where changing cartridges will be an issue.

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Output Devices

Graph Plotter

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Output Devices

Speakers

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Control Devices

Motors, Buzzers, Heaters and Lights and Lamps

Control devices sends signals to special devices that can control a fan for example.

Those special devices are called ACTUATORS.

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Actuator

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Storage Devices