Second Generation computers used __________________.
Second Generation computers used assembly language.
A second generation (programming) language (2GL) is a grouping of programming languages associated with assembly languages. The term is used in the distinction between Machine Languages (1GL) and higher-level programming languages.
An assembly language is a low-level programming language for microprocessors and other programmable devices. It is not just a single language, but rather a group of languages. An assembly language implements a symbolic representation of the machine code needed to program a given CPU architecture.