A Simple Data Transmission System Using the Office Telephone A method has evolved for transmitting data of a type originating in many laboratory situation direct to a central computer. The method requires almost no specialized equipment and uses any ordinary telephone on a "callup" basis. Present applications include cardiac-output calculations, radio-activity tracer studies and neurophysiology time-sequence studies of nerve impulses. CACM October, 1965 Neilsen, I. R. CA651014 JB March 6, 1978 6:25 PM 1181 4 1181 1181 5 1181 1181 5 1181 1181 5 1181 698 5 1181