Progress with Care
Throughout the 1970s the University Department of Medical Cardiology in Glasgow Royal Infirmary developed methods (Macfarlane et al., 1977) on a PDP8 computing system for analysis of the 3 orthogonal lead ECG as derived from the modified axial lead system (Macfarlane, 1969). Many innovative techniques were introduced and when the assembly language program reached a relatively steady state in routine use, it contained methods for analysis of cardiac rhythm, basic ECG diagnostic interpretation and detection of serial changes together with facilities for storage of ECG reports in an abbreviated form.
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