MATRIX SWITCH AND VOLTAGE DETECTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a switch structure in which only two adjacent switches can be turned ON at the same time for a matrix switch constituted by having a plurality of switches arranged in a matrix.SOLUTION: Semiconductor relays such as photo MOS relays are arranged in a matrix. LEDs 1-16 are arranged on LED sides of the photo MOS relays in order in a one-stroke writing fashion. Consequently, a driver 18 drives X-directional switches and Y-directional switches to drive only two adjacent LEDs.