PHONO - AND ELECTROCARDIOGRAPH

摘要

An electrocardiograph for connection to sensors outputting analog electrical signals, comprising; at least one sensor outputting analog electrical signals; sampling means for selectively sensing at intervals at least one analog signal representative of the analog signals from at least one of the sensors; analog to digital conversion means for receiving the sampled analog signals and outputting digitized signals corresponding thereto; memory means including a plurality of addresses for storage of data therein; processor means for writing the consecutively sampled digitized signals representative of a predetermined duration of the at least one analog sensor output signal into the addresses of the memory means for storage therein in consecutive order; printer means for recording on a print medium in response to digital data input thereto, the processor means being further adapted to read the stored data from the addresses in the memory means in the consecutive order and input the data to the printer means for printing a series of portions of a curve representative of the analog signal from the at least one sensor, the printer means being adapted to move the print medium after printing each the curve portion, a cardiogram of the predetermined duration of the selectively sensed at least one analog signal being produced on the print medium extending in the direction of advance of the print medium, the processor means inputting the data to the printer at a slower than the rate the data is written into the memory means.