The acronym BASIC stands for "Beginner’s All-purpose Symbolic Instruction Code", which used to be a very famous programming language from the 70s to the 90s. It was invented in 1964 by John George Kemeny and Thomas Eugene Kurtz. During the last decades various BASIC-dialects have emerged. This article informs you about BASIC for Commodore computers.
From the series of PET/CBM 2001 to the home computers C64/128/D/DCR and VC10/20, C16/116, Plus/4, C65, Commodore used an individually developed BASIC-version termed CBM-BASIC. There are several sub-dialects of which BASIC-Version 2.0 is the most popular.
Commodore developed their BASIC under licence of Microsoft in the year 1977 for their systems. On Commodore systems BASIC is not only used as programming language, but also as operating system. BASIC is configured on a ROM-chip.
 Overview BASIC-Keywords Version 2.0
BASIC version 2.0 allows 71 BASIC-Commands in C64/VC20 resp. C128/D/DCR:
|SPC(||SQR||STATUS (short ST)||STEP||STOP||STR$|
|SYS||TAB(||TAN||THEN||TIME (short TI)||TIME$ (short (TI$)|
 Complementary Overview of BASIC-Keywords Version 3.5
BASIC 3.5 is an enhanced version of Commodore BASIC version 2.0 and has been integrated in the home computers C16/116 and Plus/4:
 Complementary Overview of BASIC-Keywords Version 7.0
As a further enhancement of Commodore BASIC version 3.5, which is integrated into the C128/D/DCR, the following commands have been added in V 7.0: