As a critical care nurse, I'm hard-pressed to think of any areas in the medical field not heavily using computers. Of course, the advantages of computers in record-keeping are obvious.

Financial and administrative departments use computers heavily in the same way their non-medical cohorts do--spreadsheets, e-mail, calendar scheduling, etc.

Radiology takes and views digital X-rays and CT scans and MRI's on computer monitors and doctor can access their patients chest X-ray from workstations anywhere in the hospital.

Pharmacy uses computers heavily for checking doses & interractions; keeping track of narcotics dispensed from Pyxis units on the floors; printing labels for drugs so they are given to the right patient.

Nurses use computers a lot and are preparing to do so even more. The Obama administration's emphasis on the electronic medical record has brought it to the forefront for the public, but most hospitals of note have either already converted to all electronic charting & patient history or are planning to do so very soon. (My hospital rolls out the next big section of electronic charting next week.)
Computerized monitors not only display but record the vital signs of each of my ICU patients. Wireless connections let the pharmacy send new med lists to our "smart" IV pumps to decrease med errors.
Home health nurses chart on laptops from their clients' homes. MD's double-check dosages for meds on their PDA's before writing the orders. Even housekeepers and laundry have their schedules computerized. Of course our time cards, time clocks and pay are all computerized in addition to all our schedules.
The quantity of computers in a typical operating room can barely be counted. When I call dietary to order my patient food from the menu, they pull up my patient's diet order on their computer to make sure he hasn't ordered too many carbs if he's diabetic. Lab has its own complex computer system to manage all the thousands of lab draws and results they handle daily. Then of course we look up the results on the computers in the nurses station.

I could go on, but surely you get the idea.

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