If you are in the market for a keyboard and mouse combination your options are almost limitless. From market giants like Microsoft to relatively unknowns like A4Tech, manufacturers have been lining up to sell you these input devices since the dawn of personal computers. 21 years ago, the mouse was introduced to consumers as an integral part of the graphical user interface (GUI). The mouse and keyboards have freed themselves from the shackles of wires and can now be considered as remote controls for your PC.