Information Processing Language

Information Processing Language (IPL)
ParadigmAssembly
Designed byAllen Newell, Cliff Shaw, Herbert A. Simon
DeveloperAllen Newell, Cliff Shaw, Herbert A. Simon
First appeared1956
Stable release
IPL-V
OSCross-platform: JOHNNIAC, IBM 650, IBM 704, IBM 7090
Influenced
Lisp

Information Processing Language (IPL) is a programming language created by Allen Newell, Cliff Shaw, and Herbert A. Simon at RAND Corporation and the Carnegie Institute of Technology about 1956. Newell had the job of language specifier-application programmer, Shaw was the system programmer, and Simon had the job of application programmer-user.

The code includes features intended to help with programs that perform simple problem solving actions such as lists, dynamic memory allocation, data types, recursion, functions as arguments, generators, and cooperative multitasking. IPL invented the concept of list processing, albeit in an assembly-language style.