Language · 1970–2000 · Foundations
Pascal
Teaching language with structured discipline. Mutated into Delphi and Object Pascal; faded as a mainstream career stack.
How Pascal mutated
Pascal faded as a default because C and later Java owned systems and enterprise hiring. It stuck in education long enough to train a generation, then mutated into Delphi niches. The idea of structured programming stuck; the language brand did not.

Compare with
Related
Language · 1995–2015
Delphi / Object Pascal
RAD Windows client development before .NET. Still runs vertical-market apps whose source lives on a burned CD.
Language · 1972–now
C
The substrate language. Kernels, compilers, embedded — still the lingua franca when you need the metal.
Language · 1964–now
BASIC
Beginners All-purpose Symbolic Instruction Code — home computers, line numbers, and the first mass programming literacy wave.