1. A method of diagnosing a cardiac condition and warning of a heart attack of a patient, comprising the steps of: (a) acquiring electrocardiographic signals from the patient; (b) mathematically determining a plurality of functions descriptive of the patient from the electrocardiographic signals; (c) establishing a set of indices for each function, each index having two states, each indicative of the cardiac condition of the patient; (d) recognizing the state of each index for each function; (e) generating an integrated pattern of the states of the indices from a plurality of the functions; (f) storing a collection of index patterns, each containing a multitude of patterns of the states of indices for a multitude of patients whose cardiac condition is known; (g) storing a collection of index patterns of the patients having a heart attack each containing a multitude of patterns of the states of indices for a multitude of patients whose heart attack condition is known; (h) matching the generated integrated pattern against the stored collection of the index patterns of the patients having a heart attack, to determine the condition of heart attack of the patient being diagnosed; (i) matching the generated integrated pattern against the stored collection of index patterns to determine the cardiac condition of the patient being diagnosed; and (j) generating a signal for warning of a heart attack when the heart attack of the patient being diagnosed with step (h).