DEC BASIC-PLUS

Keywords

ABS

AND

ASCII

ASSIGN

ATN

BYE

CAT

CATALOG

CHAIN

CHANGE

CHR$

CLOSE

COMPILE

CONT

COS

CVT%$

CVT$%

CVT$F

CVTF$

DATA

DATE$

DEASSIGN

DEF

DELETE

DET

DIM

END

EQV

ERL

ERR

EXP

FIELD

FIX

FN

FNEND

FOR

GET

GOSUB

GOTO

HELLO

IF

IMP

INPUT

INPUT LINE

INSTR

INT

KEY

KILL

LEFT

LEN

LENGTH

LET

LIST

LISTNH

LOG

LOG10

LSET

MAGTAPE

MAT

MID

NAME

NEW

NEXT

NOT

NUM

NUM$

NUM2

OLD

ON ERROR GOTO

ON-GOSUB

ON-GOTO

OPEN

OR

PI

POS

PRINT

PRINT USING

PUT

RAD$

RANDOMIZE

READ

RECOUNT

REM

RENAME

REPLACE

RESTORE

RESUME

RETURN

RIGHT

RIGHT$

RND

RSET

RUN

RUNNH

SAVE

SGN

SIN

SLEEP

SPACE$

SQR

STOP

SWAP%

TAB

TAN

TAPE

TIME

TIME$

UNLESS

UNLOCK

UNSAVE

UNTIL

VAL

WAIT

WHILE

XLATE

XOR

One of the oldest and most influential BASIC implementations, developed by the Digital Equipment Corporation (DEC) and released in 1970.

It is said to be highly influenced by JOSS, a Rand Corporation time-sharing programming language which also influenced other languages such as FOCAL and MUMPS¹⁾.

Where it is/was used

DEC PDP-11, under the RSTS/E operating system

Noteworthy characteristics

The to-be-famous string manipulation functions LEFT$, MID$, RIGHT$ were born with BASIC-PLUS.

Environment and usage

Extensions

Curiosities

Related to...

Influenced by

Influence for

Altair BASIC by Micro-Soft - Bill Gates used BASIC-PLUS on the PDP-11 during high school and his experience influenced the first BASIC for microcomputers
Microsoft BASIC-80 - took even more from DEC BASIC and spread through all of its descendents

Versions and successors

VSI BASIC for OpenVMS - through this day, a direct heir of the original BASIC-PLUS

References

Compilers, DEC

¹⁾

https://en.wikipedia.org/wiki/JOSS

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