Sinclair BASIC: differenze tra le versioni
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===Parole riservate===
[[File:ZXSpectrum48k.jpg|thumb|right|La tastiera di uno [[ZX Spectrum]]: le parole chiave del [[BASIC]] erano inserite mediante la pressione di particolari combinazioni di tasti funzione e lettere. Si notino intorno ai tasti i suggerimenti dei comandi scritti con colori differenti, ad indicare la combinazione richiesta]]
Sullo ZX Spectrum c'erano 86 parole riservate al Sinclair BASIC: queste includevano ''comandi'' (ce n'erano 50), ''funzioni'' (31) ed
:<u>ABS</u>, <u>ACS</u>, <u>AND</u><sup><small>1</small></sup>, <u>ASN</u>, ''AT'', <u>ATN</u>, <u>ATTR</u>, BEEP, BIN, BORDER, BRIGHT<sup>7</sup>, CAT<sup><small>2</small></sup>, <u>CHR$</u></u><sup><small>3</small></sup>, CIRCLE, CLEAR, CLOSE#<sup><small>2</small></sup>, CLS, <u>CODE</u><sup><small>3</small></sup>, CONTINUE, COPY, <u>COS</u>, DATA, DEF FN, DIM, DRAW, ERASE<sup><small>2</small></sup>, <u>EXP</u>, FLASH<sup>7</sup>, <u>FN</u>, FOR, FORMAT<sup><small>2</small></sup>, GO SUB, GO TO, IF<sup><small>4</small></sup>, <u>IN</u>, INK<sup>7</sup>, <u>INKEY$</u><sup><small>3</small></sup>, INPUT, <u>INT</u>, INVERSE<sup>7</sup>, <u>LEN</u>, LET<sup><small>5</small></sup>, ''LINE'', LIST, LLIST, <u>LN</u>, LOAD, LPRINT, MERGE, MOVE<sup><small>2</small></sup>, NEW, NEXT, <u>NOT</u><sup><small>1</small></sup>, OPEN#<sup><small>2</small></sup>, <u>OR</u><sup><small>1</small></sup>, OUT, OVER<sup>7</sup>, PAPER<sup>7</sup>, PAUSE, <u>PEEK</u>, <u>PI</u>, PLOT, <u>POINT</u>, POKE, PRINT, RANDOMIZE, READ, REM, RESTORE, RETURN, <u>RND</u>, RUN, SAVE, <u>SCREEN$</u><sup><small>3</small></sup>, <u>SGN</u>, <u>SIN</u>, <u>SQR</u>, ''STEP'', <u>STR$</u><sup><small>3</small></sup>, ''TAB'', <u>TAN</u>, ''THEN'' <sup><small>4</small></sup>, <u>TO</u>, <u>USR</u><sup><small>8</small></sup>, <u>VAL</u><sup><small>3, 6</small></sup>, <u>VAL$</u><sup><small>3</small></sup>, VERIFY
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