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What are the advantages and disadvantages of using a conventional wired optical mouse and a wireless optical mouse?
We all know how difficult it is to move a wired mouse around a cluttered desk - the wire tends to get caught in stacks of paper or books which can hamper your hand movements. With a wireless mouse, you can move your hands freely to any position that is most comfortable to you. Combined with a wireless keyboard, it is also a great way to control an HTPC (Home Theatre PC) letting you control your computer from the comfort of your living room sofa without any wires running through the floor.
It does have its disadvantages. For one thing, unlike its wired cousin, it needs its own power source - usually a rechargeable battery. When its battery runs down, you end up with a mouse less computer. This is a problem when you're in the middle of something important such as working on that CAD drawing that's due in an hour or having a useless mouse in the middle of a skirmish in a video game. This is why it is always important to have a wired mouse on hand in case of emergencies.
Hope this helps!