They're tough for everyone :( But when coronavirus hit here in the UK, the museum had to close its doors to the public, and we lost practically all our income overnight.
No visitors, no workshops, no events, no school visits... no income. We know that things are tough for everyone right now, but if you can afford to help us through these tough times please donate what you can.
There's over 36,000 exhibits here! That should keep you occupied for a bit - get searching!
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ZX Spectrum BASIC Programming By Steven Vickers Edited by Robin Bradbeer
First edition 1982 by Sinclair Research Limited Cover illustration by John Harris of Young Artists
CONTENTS Chapter1 Introduction A guide to the ZX Spectrum keyboard and a description of the display. Chapter 2 Basic programming concepts Programs, line numbers, editing programs using , and EDIT, RUN, LIST, GO TO, CONTINUE, INPUT, NEW, REM, PRINT, STOP in INPUT data, BREAK Chapter 3 Decisions IF, STOP, =, <, >, <=, >=, <> Chapter 4 Looping FOR, NEXT, TO, STEP. Introducing FOR-NEXT loops Chapter 5 Subroutines GO SUB, RETURN Chapter 6 READ, DATA, RESTORE Chapter 7 Expressions Mathematical expressions using +, -, *, /, scientific notation and variable names. Chapter 8 Strings Handling strings and slicing. Chapter 9 Functions User-definable functions and others readily available on the ZX Spectrum using DEF, LEN, STR$, VAL, SGN, ABS, INT, SQR, FN Chapter 10 Mathematical functions Including simple trigonometry: , PI, EXP, LN, SIN, COS, TAN, ASN, ACS, ATN Chapter 11 Random numbers Using RANDOMIZE and RND. Chapter 12 Arrays Strings and numeric arrays - DIM. Chapter 13 Conditions Logical expressions: AND, OR, NOT. Chapter 14 The character set A look at the ZX character set including graphics and how to construct your own graphic characters: CODE, CHR$, POKE, PEEK, USR, BIN Chapter 15 More about PRINT and INPUT Some more complicated uses of these commands using separators: ,;' , TAB, AT, LINE and CLS. Chapter 16 Colours INK, PAPER, FLASH, BRIGHT, INVERSE, OVER, BORDER Chapter 17 Graphics PLOT, DRAW, CIRCLE, POINT Chapter 18 Motion Animated graphics using PAUSE, INKEY$ and PEEK. Chapter 19 BEEP The sound capabilities of the ZX Spectrum using BEEP. Chapter 20 Tape Storage How to store your programs on cassette tape: SAVE, LOAD, VERIFY, MERGE. Chapter 21 The ZX Printer LLIST, LPRINT, COPY Chapter 22 Other equipment Connecting the ZX Spectrum to other machines and devices. Chapter 23 IN and OUT Input/Output ports and their uses: IN, OUT Chapter 24 The memory A look at the internal workings of the ZX Spectrum: CLEAR Chapter 25 The system variables Chapter 26 Using machine code Introducing USR with a numeric argument APPENDIX A The character set APPENDIX B Reports APPENDIX C A description of the ZX Spectrum for reference APPENDIX D Example programs APPENDIX E Binary and hexadecimal
Since opening at the end of 2013, over 5,000 children have visited the Centre. These children deserve a space which is engaging and instructive, where they can feel a sense of adventure, exploration and surprise!
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