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One of the most common output devices are the monitors of our computers, otherwise known as display devices. They allow us to see exactly what is going on in our operating system whether it be through a screen or projector. You'll learn display devices are any type of screen that allows us to view output from the computing system. They are plug and use devices with specific connection inputs and typically a variety of inputs so you can determine which you prefer to use. We'll break down one monitor to show the connections and examine the types of devices its compatible with. That's important because the type of device it connects to is determined solely by the type of video card the motherboard's holds. If you have the right type of connectivity and video card, you can connect any type of display device, from small desktop monitor to large screen TV. Projectors are display devices that allow us to display enlarged version of small visuals images. They can be displayed on projection screen, specialized display devices or even a wall or small screen as in a pocket projector. Projects come in a variety of types, can be complex in the types of resolution and size optimization or image clarity features, but generally have standard output connectors. Since they are designed for myriad purposes and come in equally varied sizes, you must research type and size against the purpose of its use and assess compatibility if using with a computing system.