The Tektronix M162 (P/N 155-0025-00) is a character generator (m μ n p X K M G T R) monolithic integrated circuit 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 4, 10 prefixes (m μ n p X K M G T R).
The lowercase prefix letter "p" (pico) is also used as the greek "rho" (ρ), e.g. in the 7S12.
The 155-0023-00 through 155-0027-00 (M160-M164) share the same silicon and differ only in the metallization layers.