I have developed a computer controlled shifting system for bicycle derailleur systems. This would be in the form of a kit that you would install on any bicycle and the manual shifters would be retained and still available for use if the computer operated shift system failed or the batteries died where replacements would be unavailable. Basic operation consists of a single toggle type switch where the rider would simply press the switch up or down for a gear change. Both front and rear derailleurs are automatically controlled from the single switch. An audible beep warns of an impending front derailleur shift change when required. Any number of toggle switches may be placed in any convenient places the rider would like them. You could even place a switch in a glove with wireless control so as to shift up or down wherever the hand is being used. The computer is programmable for any chain ring number and spacing as well as the cassette or freewheel. Any personal computer may be used to program the shift computer with supplied software. Please answer the following poll so as to inform me if I should spend the money to patent this device.