Tektronix Readout System

Tektronix needed a way to display data on the CRT for their 7000 series analogue oscilloscopes but it was a challenge because the initial oscilloscopes were analogue-only designs. Originally they had planned to use fibre optics to create a small display area next to the CRT but then a Tektronix engineer named Barrie Gilbert had a better idea: how about drawing the characters directly on the CRT?