KEY MATRIX SYSTEM SWITCH DEVICE

PURPOSE:To provide the key matrix system switch device which is excellent even when provided dispersedly like switches of a camera while a click feeling in operation is given by gathering switches which has the same electrode for scanning on one base plate when inputted by scanning a key matrix with a switch consisting of a conductive spring and a conductive base plate. CONSTITUTION:A conductive spring 20 is supported on a conductive base plate 30 (or 31) and held at the same potential with the base plate 30 (or 31). The spring 20 when pressed down contacts a pattern on a circuit board 41 to close the switch. On one base plate, switches having the same common electrode C1 (or C2) for scanning in a group of switches of key matrix constitution are gathered, so that the signal input using the key matrix can be performed with a click feeling.