2-1B's handheld medical diagnostic computer
A diagnostic computer, or medical diagnostic computer as it's also known, was a type of computer that was purposed for the diagnosis of medical ailments. These medical diagnostic computers could be found installed on medical droids, such as the 2-1B surgical droid, but they also existed as handheld devices. One was carried by Tamo Lan, and a smaller, miniaturized version of the device was also available.