Analysis of information sources in references of the Wikipedia article "HP-18C" in English language version.
Several existing operating systems and languages were considered, but none could meet all of the design objectives. A new system was therefore developed, which merges the threaded interpretation of Forth with the functional approach of Lisp. The resulting operating system, known unofficially as RPL (for Reverse-Polish Lisp), made its first public appearance in June of 1986 in the HP-18C Business Consultant calculator.(NB. This title is often cited as "RPL: A Mathematics Control Language". An excerpt is available at: RPLMan from Goodies Disk 4zip file)
Several existing operating systems and languages were considered, but none could meet all of the design objectives. A new system was therefore developed, which merges the threaded interpretation of Forth with the functional approach of Lisp. The resulting operating system, known unofficially as RPL (for Reverse-Polish Lisp), made its first public appearance in June of 1986 in the HP-18C Business Consultant calculator.(NB. This title is often cited as "RPL: A Mathematics Control Language". An excerpt is available at: RPLMan from Goodies Disk 4zip file)
Several existing operating systems and languages were considered, but none could meet all of the design objectives. A new system was therefore developed, which merges the threaded interpretation of Forth with the functional approach of Lisp. The resulting operating system, known unofficially as RPL (for Reverse-Polish Lisp), made its first public appearance in June of 1986 in the HP-18C Business Consultant calculator.(NB. This title is often cited as "RPL: A Mathematics Control Language". An excerpt is available at: RPLMan from Goodies Disk 4zip file)