They help in carrying out precise 'tests' and medical examinations.
They monitor patients and provide medical alerts, which are more accurate and timely.
They are useful for data collection and storage of a patient's medical history.
They significantly increase the precision level of the diagnosis.
They make the hospital accounting and billing process more efficient and accurate.
Computers help update the medical history of patients.
Read more at Buzzle: http://www.buzzle.com/articles/uses-of-computers-in-hospitals.html