Focal-8 Demonstration Programs

This document is a collection of demonstration programs for the FOCAL-8 language, released by the Digital Equipment Corporation in July 1970. It serves as a guide for the PDP-8/I and PDP-8/E computer systems. The contents include:

• Display Routines: Programs like Circle Plot, Figure-8, and Sine that demonstrate graphical plotting capabilities on a Teletype.
• Games and Quizzes: Educational and recreational programs such as Dice Game, King of Sumeria, Literature Quiz, Lunar Module, Management Game, Perpetual Calendar, Towers of Hanoi, and Word Game.
• Mathematical Routines: Education-focused routines (Addition Exerciser, Numerical Relationships, Prime Factors) and advanced mathematical routines (Automatic Curve Fitting, Base-to-Base Integer Conversion, Statistics, etc.).
• Problem Solving Routines: Practical applications such as Inventory Scheduler, Interest Payments, and Stock Market commission calculations.

The document includes abstract descriptions, operational procedures, and example code runs for each program.