Abstract: A shifting device includes a transmission device, a first controller and a first communicator. The transmission device is configured to shift a transmission ratio of a human-powered vehicle. The first controller is configured to control the transmission device. The first communicator is configured to perform communication with a drive unit for a human-powered vehicle. The drive unit includes a motor configured to apply a propulsion force to the human-powered vehicle. In a case where the first controller shifts the transmission ratio. The first controller is configured to control the first communicator so that the first communicator sends first information to the drive unit in a case where the first controller shifts the transmission ratio. The first information includes at least one of information related to a shifting time of the transmission ratio and information related to a shifting period of the transmission ratio.

Abstract: A human-powered vehicle control device is provided for a human-powered vehicle. The human-powered vehicle control device includes a master electronic controller configured to control a first component and a second component. The first component is configured to be controlled by at least one of the master electronic controller and a first slave electronic controller. The master electronic controller is configured to restrict operation of at least one of the first component and the second component based on a first operation signal transmitted from the first slave electronic controller in a case where the first component is controlled by the first slave electronic controller.