Outputs 9x/ IT1.

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Outputs 9x/ IT1

Learning Outcomes LO1: will understand what an output device is and give a real life example. LO2: will be able to explain the 4 types of output. Visual, Printed, Audio & Control. LO3: will be able to recommend and justify specific output solutions for real world problems.

What is meant by an output device? Starter In pairs discuss: What is meant by an output device?

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When a computer has finished processing information, the information needs to be output so that it can be used. Monitors: screens or Visual Display Units (VDUs) display the effects of what the user is doing can vary in size and resolution. Printers: produce a paper copy of the user’s work: a ‘hard copy’ come in three main types: laser, inkjet and dot matrix. Some businesses also use plotters. Sometimes we just need to see the information, on screen or on paper, so we use a monitor or a printer.

Speakers: are used to output sound, whether music or voice vary a lot in quality. Headphones: work in the same way as speakers can be cordless. Sometimes we need to hear the information, so we use loudspeakers or headphones.

Sometimes we want it to control something, so we send a signal to a motor or a switch that is part of another device, like a robotic arm or a computerized sewing machine.

Inkjet Printer Dot Matrix Printer Plotter Laser Printer

LCD Screen CRT Monitor TFT Monitor

Device Benefits CRT Cheapest monitor to buy; gives a sharp picture LCD Slim screen; Used for laptops and digital display TFT Slim screen; quick to refresh because each pixel has its own transistor Speakers Good for loud music; can address a whole room Headphones Can listen without disturbing others; good for private conversation Laser Quick and best quality printer; large paper tray Inkjet Cheap colour printing; good for printing photos Dot matrix Impact printer; good for multi-part forms Plotter Large drawing size; clear lines for technical drawings Control Safe in all conditions; good for repetitive tasks

Write your name at the top! Task Outputs Complete the Main Task Worksheet. Draw a line from the Output to the correct description. Write your name at the top!

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