155-0024-00
The Tektronix 155-0024-00 (M161) is a Tek-made character generator chip in a 16-pin plastic DIP, designed by Barrie Gilbert for the 7000 series readout system.
It is an analog read-only memory used as a Character Generator for code row 2, 10 special symbols (↓ < I / + - + C Δ >)
The 155-0023-00 through 155-0027-00 (M160-M164) share the same silicon and differ only in the metallization layers.