- 8080 PL/M Compilers Operator Manual (bitsaver.org)
This manual describes the operation of the INTEL 8080 PL/M* Cross Compiler. The compiler comprises two distinct programs written in ANSI standard FORTRAN IV and may be installed on most medium to large scale computer systems. Some details presented in this manual may vary due to system dependencies and compiler options selected during the installation process. The PL/M language itself is described in the 8008 and 8080 PL/M Programming Manual.
- Iron Age (Wikipedia)
The Iron Age is the final epoch of the three historical Metal Ages, after the Copper and Bronze Ages. It has also been considered as the final Age of the three-age division starting with prehistory (before recorded history) and progressing to protohistory (before written history). In this usage, it is preceded by the Stone Age (subdivided into the Paleolithic, Mesolithic and Neolithic) and Bronze Age. These concepts originated in describing Iron Age Europe and the Ancient Near East, but they now include other parts of the Old World.