LOCO Logical Computer 14 of 26
Universal Decision Element
The functions were
A:or (A for alternation)
p OR q OR r
B:non-implication
NOT (p implies q)
C:implication (conditional)
NOT p or q
D:conditioned disjunction (3 arguments)
if q then p else r fi
E:equivalence F:flip-flop
2 inputs, set and reset
J:joint denial, nor
NOT p AND NOT q
K:and (K for konjunction)
p AND q AND r
L:at least 2 true from 3 inputs
R:non-equivalence, exclusive OR S:incompatibility, Sheffer function, nand
NOT p OR NOT q

The letters were the "Polish" or "Lukasiewicz" notation for the operators, representing in general the first letters of the Polish names of the functions.
1959-LOCO1205.JPG
Email Eric Foxley with comments.