Logo

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This article is about the programming language Logo in connection to Commodore computer systems.

Logo is an educational programming language, which was developed by Wally Feurzeig, Cynthia Solomon and Seymour Papert in 1967 by a Cambridge, Massachusetts research firm.

The name of the coding language Logo was derived from the Greek word logos (english "thought").

The famous feature of Logo is the turtle, which shows the output of the LOGO commands and is also used as the cursor.

Logo was very popular in the 1980s in schools for teaching programming for beginners. In the home computer era a lot of Logo implementations were published for a host of computer systems including the C64/128.

Implementations

C64

• Commodore Logo (Terrapin, Inc; Commodore 1982/83)
• Object Logo (by Harold Abelson) modify M.I.T. version with easier commands
• Turtle Graphics I / Turtle Graphics II / "Turtle II - A Turtle Graphics Language For The Commodore 64" on cartridge (by David Malmberg; HES 1982/83) with 66 commands
• Telly Turtle (1983)
• Turtle Graphics Interpreter - (Irwin Tillman; Compute!'s Gazette; 1984)
• Elmer the Turtle (by Peter Crosby; RUN-Magazin) issue September 1986 - A BASIC program with a *-turtle.

C128

• (?)

C128 in CP/M Mode

• "DR Logo" (only for CPC firmware)

Plus/4

• Commodore Logo (Terrapin, Inc; Commodore 1984 - Cartridge #T263001)

Books

• Mark Eckenwiler (Hrsg.): "Logo – A Language for Learning‎‎" (The Commodore 64 Logo Tutorial)

Links

Wikipedia: Logo_(programming_language)

• Commodore Languages List by Dan Fandrich
• Commodore 64 Logo – Turtle Graphics for the C64
• Logo Course in magazine Happy Computer, 03/1985

Downloads

• C64Games.de - Game No. 6056 Elmer the turtle
• C64Games.de - Game No. 6066 Turtle Graphics Interpreter Compute!'s Gazette October 1984