"The COSMAC (Complementary Symmetry Monolithic Array Computer) is an 8-bit microprocessor family introduced by RCA. It is historically notable as the first CMOS microprocessor."

"Successors to the 1802 [ . . . ] have [ . . . ] enhanced features [ . . . ] There are also some minor pin function changes, but the line continues to be produced in its original 40-pin dual in-line package (DIP) format."

en.wikipedia.org/wiki/RCA_1802

That's pretty cool! Just learned about the #COSMAC from @requiem 's comment hackers.town/@requiem/11209580… .
8-bit CMOS microprocessor