Calco 12

Summary

CALCO 12 is a plotting program developed in 1971 for the Model 565 CalComp Plotter, designed to quickly plot large volumes of data generated by programs like Catacal. The program, written in the DIAL language, runs on a PDP-12 computer requiring at least one LINCtape unit and EAE (Extended Arithmetic Element).

Key features of the software include:

• Plotting Capabilities: Draws axes, allows for a user-defined origin, and handles a specified number of data points.
• Operating Procedure: The program is interactive, guiding the user through data entry (tape block, unit number, and number of points in octal) and physical plotter setup (positioning the pen).
• Control Options: Users can toggle axes via sense switch 01 and control the program's post-plotting behavior (restarting CALCO 12 or returning to DIAL-MS) via sense switch 00.