A human-machine dialog system including a first part including a data processing unit and an electrical power supply unit, a second part including a number of human-machine dialog members each provided with a human-machine dialog interface, and a fastening support arranged to accommodate each human-machine dialog member in a removable and interchangeable manner, and a communication and power supply bus linking the power supply unit and the processing unit of the first part to each human-machine dialog member.

An electronic apparatus includes a housing having first and second cover bodies covering opposite first and second ends thereof, and a switch device including a support member, and a switch assembly mounted on and slidable relative to the support member and having first and second contact points. When one of the first and second cover bodies covers one of the ends of the housing and pushes one of the first and second contact points with the other one of the first and second contact points being unblocked, the switch assembly is placed in an OFF state. When the first and second cover bodies cover the ends of the housing and push the first and second contact points toward each other, the switch assembly is switched from the OFF state to an ON state.