Tektronix 4010

The terminal is an upper-case only graphics terminal introduced in May, 1972 at a price of $3,950. The 4010-1 includes hardcopy circuitry that allows the stored image to be read out by the Tektronix 4610 hard copy unit.

It is a direct view storage tube (DVST) graphics terminal that operates like an Etch A Sketch in that you can draw points, lines and characters on the screen, but once drawn you cannot selectively erase them. Instead, you must erase the entire screen. This is a consequence of the storage tube itself; images are drawn directly onto the tube and stored as a pattern of electric charge on the front of the tube. As long as the tube is properly powered, the image remains visible until cleared.