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Hooking 3 PC's to one monitor?

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To make this simple, is it even possible? I guess the only way I thought it was is if it were possible to hook a splitter into one monitor and from that connect the other computers?

So basically I guess it would be like this.

PC1----------------PC2-----------------------PC3
------------Monitor with splitter
|-----------video cable|--------------------Video cable

Is that even possible? If not then what has to be done?

Thanks!
 
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Generally, that's something serviced by a KVM (Keyboard, Video Mouse) Switch. Essentially, it lets you plug one set of peripherals (Mouse and Keyboard) into a box which has a video out that goes to your monitor. Then you plug the 3 sets of cables coming off the KVM to the computers you would like to control. Then you simply press a button or key (often Scroll Lock) and it will let you switch between computers.
 
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Frick

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If the monitor has multiple inputs and you can choose between them you can plug each computer to a different input.
 
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Thanks guys! exactly the kind of answers in was looking for.
 
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