MARK-IV

MARK-IV was a commercial programming language developed in the early 1970s. It was one of the first high-level languages to offer code portability between different computer architectures. MARK-IV was designed for use in scientific and engineering applications. It was a structured, imperative language with a simple syntax. It supported floating point arithmetic and had a rich set of built-in functions for mathematical and statistical operations. MARK-IV was used extensively in the aerospace industry for designing and developing control systems for aircraft and missiles. It was also used in the oil and gas industry for exploratory data analysis and process control. The language was gradually replaced by newer languages such as C and FORTRAN in the 1980s and 1990s. However, it remains in use in some legacy systems.