![]() ![]() BASIC 5.x removed the ability to crunch program lines. WEND loops, dynamic string allocation, and several other features. The final major release of BASIC-80 was version 5.x, which appeared in 1981 and added support for 40-character variable names, WHILE. It was also ported to the 16-bit BASIC-86 ( This new 40-bit format became the most common as it was used on most 6502-based machines of the era. The 6502 had somewhat less denseĪssembler code and expanded in size to just under 8K for the single precision version, or 9K for a version using an intermediate 40-bit floating point format in place of the original 32-bit version. The extended 8 KB version was then generalized into BASIC-80 (8080/85,Ħ502-BASIC. Numeric variables now had three basic types, % denoted 16-bit integers, # denoted 64-bit doubles, and ! denoted 32-bit singles, but this was the default format so the ! is rarely seen in programs. ELSE structures, user defined functions, more advanced program editing commands, and descriptive error messages as opposed to error numbers. Later on, Microsoft released the 12K Extended BASIC, which included double precision 64-bit variables, IF. String variables were denoted with a $ suffix, which remained in later versions of the language. Variable names consisted of one letter (A–Z) or one letter followed by one digit (0–9), thus allowing up to 286 numeric variables.įor machines with more memory, the 8 KB version added 31 additional statements and support for string variables and their related operations like MID$ and There were no string variables in 4K BASIC and single-precision 32-bit floating point was the only numeric type supported. LIST, NEW, PRINT, INPUT, IF.THEN, FOR.NEXT, SQR, RND, SIN, LET, USR, DATA, READ, REM, CLEAR, STOP, TAB, RESTORE, ABS, END, INT, RETURN, STEP, GOTO, and GOSUB. The following functions and statements were available: Paper tape and in its original version took 4 The first versions supported integer math only, butįloating-point arithmetic was possible, and wrote a library which became the Microsoft Windows platforms in its most recent incarnation,Ī kit-build Altair 8800 computer with the popular Model 33 ASR (Automatic Send and Receive) Teletype as terminal, paper tape reader, and paper tape punch.Īltair BASIC interpreter was developed by Microsoft founders Visual Basic reboosted its popularity and it remains in wide use on Macintosh, BASIC was no longer as widely used, although it retained a strong following. Slight variations to add support for machine-specific functions, especially graphics, led to a profusion of related designs likeĪs the early home computers gave way to newer designs like the ![]() ![]() Home computer craze during the late-1970s and early-1980s, BASIC was ported to and supplied with many home computer designs. High-level programming language available for the It first appeared in 1975 asĪltair BASIC, which was the first version ofīASIC published by Microsoft as well as the first Microsoft company and evolved into a line of ![]()
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