| 摘要 |
A pulse-rate indicator having electro-optical means for converting pulse beats into electric measuring pulses, means for generating a number of timing pulses derived from measuring pulses, means for calculating the pulse-rate from the number of timing pulses, means for displaying the pulse-rate, and a pushbutton for rendering the indicator operative, the electro-optical means being disposed in the pushbutton for generating the electric measuring pulses as a function of the perfusion of blood in a human fingertip pressing upon the pushbutton.
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