Abstract: Apparatus for recording, control and early detection of cardiovascular diseases by detection, recording and/or audible and/or visual display of the heart beat frequency and rhythm from a digital pulse provided by a plethysmographic process at a given spot of the body, such as a finger of a hand, includes a digital pulse sensing device. The pulse sensing device consists of a determined frequency generator and an associated sensor, processing circuits, a recording device and/or audible and/or visual display devices. The apparatus includes at least two transducer devices of different physical natures, the output signal of which are processed separately and/or together to provide more accurate information about the heart beat frequency rhythm.