Patent ID: 8830173

Claim:
A control apparatus comprising: a first display unit; a second display unit configured to include a plurality of display elements; a first control unit configured to have a data output portion for outputting a data signal and a signal output portion for outputting a selection signal; and a second control unit configured to have a data input portion for receiving the data signal and a signal input portion for receiving the selection signal, wherein the data output portion of the first control unit is connected to both the data input portion and the second display unit, and the signal output portion is connected to the signal input portion, wherein the second control unit controls display of the first display unit based on the data signal in response to a level of the selection signal being a first level, and wherein the first control unit performs, at different timings, a first control in which the selection signal of the first level is output from the signal output portion and the data signal to be displayed on the first display unit is output from the data output portion, and a second control in which the selection signal of a second level which is different from the first level is output from the signal output portion and the data signal to be displayed on the second display unit is output from the data output portion.