The Tektronix 4114 is a graphics terminal that uses a 19" direct-view storage CRT.
Typically, the 4114 is connected to a computer via RS-232. There is an on-screen "dialog area" where a textual interaction with the computer can be seen. The computer can also send drawing commands to the 4114, which are rendered by the 4114. The microprocessor in the 4114 is the Intel 8086.