The Teletype was used as the console of the first computer of the department.
This device is largely mechanical driven by a motor and steered by relays.
It implements four different devices:
The Teletype was coupled to the Varian by a 60 milliampere current loop, it operated on 110 baud.
This device was also used with the first Unix systems. This has left traces even in today's Unices :
The motor of the teletype drives the device by a worm-gearing. This coupling did wear out regularly. Then the electronic computer Varian could not be started due to a mechanical problem...
Ebay recently (dec/2/2003) offered a teletype for sale, do not forget to read about Bill Gates early use of teletypes.