Abstract: One variation of a modular keyboard system includes a chassis; a keyboard module; and a trackpad module. The chassis includes a controller and an input deck. The input deck includes an array of couplers, each coupler in the array of couplers including a magnetic element and an electronic communication port. The keyboard module includes a first connector configured electronically and magnetically couple a first coupler, in the array of couplers, to transiently retain the keyboard module in a first configuration spanning an upper region of the input deck and transmit electrical signals from a set of keys to the controller. The trackpad module includes a second connector configured to electronically and magnetically couple a second coupler, in the array of couplers, to transiently retain the trackpad module in a second configuration spanning a lower region of the input deck and transmit electrical signals from a touch sensor to the controller.

Abstract: A measurement assembly of a personal health monitoring system for measuring the lung capacity of a person. In an embodiment, the measurement assembly includes a sensor assembly includes a sensor that is configured to sense the force of a fluid exhaled by the person onto the sensor and output a force measurement. In addition, the measurement assembly includes a control assembly coupled to the force sensing assembly, the control assembly configured to receive the force measurement from the sensor. Further, the measurement assembly includes a housing configured to support each of the sensor assembly and the control assembly. The sensor is disposed on an external surface of the housing.