Patent ID: 9083384
Filing Date: 2015-07-14
Classification: G06F,H03M

Abstract:
1. A microcomputer system comprising: a microcomputer including first to fourth input ports; and first to sixth push-down switches, each of which includes an electric conductor coupled to a terminal to receive a ground level voltage, and first and second contacts coupled to the electric conductor when a corresponding push-down switch is turned on, wherein the first contacts of the respective first to third push-down switches are coupled to the first input port of the microcomputer, and the second contacts of the respective first to third push-down switches are coupled to the second to fourth input ports, respectively, the first contacts of the respective fourth to fifth push down switches are coupled to the second input port, and the second contacts of the respective fourth to fifth push-down switches are coupled to the third and fourth input ports, respectively, the first contact of the sixth push-down switch is coupled to the third input port, and the second contact of the sixth push-down switch is coupled to the fourth input port, and input voltages to be applied to two of the first to fourth input ports of the microcomputer shift to the ground level voltage, when one of the first to sixth push-down switches coupled to the two of the first to fourth input ports turns on.