Dr. Fern is a doctor that works in the ER. A patient, Hunter, comes in with chest pains. Dr. Fern asks the patient his family history and then asks questions about his symptoms, such as how long they have been occurring. Dr. Fern takes Hunter’s blood pressure and runs an EKG, which is a test that measures the electrical activity of the heart and then uses software to show the results. Dr. Fern then diagnoses that Hunter has an issue with his heart’s rhythm and prescribes a medication. What technical information is being used in this scenario?