The present invention provides a portable sensing and operational device, which uses a sensing module to receive the sensing signal transmitted by the sensor and produce a sensing datum correspondingly. Then an operational circuit operates a first matrix and a second matrix according to the sensing datum. The first matrix corresponds to a plurality of maximum values； the second matrix corresponds to a plurality of minimum values. The operational circuit operates to generate at least a component by decomposing the first matrix and the second matrix. The component is provided to an output circuit for outputting the component to an electronic device.
