Delete comment from: Ken Shirriff's blog
I'm russian electronic engineer and want to add a few remarks. Actually chip name is not "Δ134 ΛБ2A" but simple 134ЛБ2А. Delta-shaped sign isn't a letter but just a triangle. The triangle sign on Soviet ICs means "handle with care", "sensible to electrostatic discharge". By default all 4000-like CMOS IC had this triangle, and in addition, some TTL chips too.
In 1983 soviet chip industry had several chips for LED, VFD and LCD electronic watches, both single-chip (pMOS) from different vendors (К145ИК1901, К1016ХЛ1) and multi-chip:convenient 3-chip CMOS set (К176ИЕ12, К176 ИЕ13, К176ИД3). Soviet clock chips usually were original. But any of them never had a mil-spec version. You can see dozens of mass-market soviet electronic clocks from 1970s and 1980s here (including guts view):
http://www.leningrad.su/museum/main.php?lang=0
Jan 30, 2020, 2:33:59 AM