Home » Archimedes archive » Acorn User » AU 1994-08.adf » !Education_Education » Control/!Control/Dir/Logo/Answers2
Control/!Control/Dir/Logo/Answers2
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Acorn User » AU 1994-08.adf » !Education_Education |
| Filename: | Control/!Control/Dir/Logo/Answers2 |
| Read OK: | ✔ |
| File size: | 0314 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
1. Roman Key. This shape should be constructed as a procedure called, for example, KEY. Once done it can be called any number of times to produce a row of Keys. They can then be extended to create a frame of Keys. By rotating each successive key through, say, 10� it will make a circular frame of Keys. FORWARD 16 RIGHT 90 FORWARD 16 RIGHT 90 FORWARD 8 RIGHT 90 FORWARD 8 LEFT 90 FORWARD 8 LEFT 90 FORWARD 16 LEFT 90 The last left turn is vital to ensure the turtle is in the correct position to begin the next Key. 2. Squares. This is 36 squares, each rotated by 1/36th of a circle - in other words 10�. Note the nested REPEATs. The inner one draws the squares. REPEAT 36 REPEAT 4 FORWARD 100 RIGHT 90 END LEFT 10 END or REPEAT 36 [REPEAT 4 [FORWARD 100 RIGHT 90] LEFT 10]
00000000 31 2e 20 52 6f 6d 61 6e 20 4b 65 79 2e 20 54 68 |1. Roman Key. Th| 00000010 69 73 20 73 68 61 70 65 20 73 68 6f 75 6c 64 20 |is shape should | 00000020 62 65 20 63 6f 6e 73 74 72 75 63 74 65 64 20 61 |be constructed a| 00000030 73 20 61 20 70 72 6f 63 65 64 75 72 65 20 63 61 |s a procedure ca| 00000040 6c 6c 65 64 2c 20 66 6f 72 20 65 78 61 6d 70 6c |lled, for exampl| 00000050 65 2c 20 4b 45 59 2e 20 4f 6e 63 65 20 64 6f 6e |e, KEY. Once don| 00000060 65 20 69 74 20 63 61 6e 20 62 65 20 63 61 6c 6c |e it can be call| 00000070 65 64 20 61 6e 79 20 6e 75 6d 62 65 72 20 6f 66 |ed any number of| 00000080 20 74 69 6d 65 73 20 74 6f 20 70 72 6f 64 75 63 | times to produc| 00000090 65 20 61 20 72 6f 77 20 6f 66 20 4b 65 79 73 2e |e a row of Keys.| 000000a0 20 54 68 65 79 20 63 61 6e 20 74 68 65 6e 20 62 | They can then b| 000000b0 65 20 65 78 74 65 6e 64 65 64 20 74 6f 20 63 72 |e extended to cr| 000000c0 65 61 74 65 20 61 20 66 72 61 6d 65 20 6f 66 20 |eate a frame of | 000000d0 4b 65 79 73 2e 20 42 79 20 72 6f 74 61 74 69 6e |Keys. By rotatin| 000000e0 67 20 65 61 63 68 20 73 75 63 63 65 73 73 69 76 |g each successiv| 000000f0 65 20 6b 65 79 20 74 68 72 6f 75 67 68 2c 20 73 |e key through, s| 00000100 61 79 2c 20 31 30 b0 20 69 74 20 77 69 6c 6c 20 |ay, 10. it will | 00000110 6d 61 6b 65 20 61 20 63 69 72 63 75 6c 61 72 20 |make a circular | 00000120 66 72 61 6d 65 20 6f 66 20 4b 65 79 73 2e 0a 0a |frame of Keys...| 00000130 46 4f 52 57 41 52 44 20 31 36 0a 52 49 47 48 54 |FORWARD 16.RIGHT| 00000140 20 39 30 0a 46 4f 52 57 41 52 44 20 31 36 0a 52 | 90.FORWARD 16.R| 00000150 49 47 48 54 20 39 30 0a 46 4f 52 57 41 52 44 20 |IGHT 90.FORWARD | 00000160 38 0a 52 49 47 48 54 20 39 30 0a 46 4f 52 57 41 |8.RIGHT 90.FORWA| 00000170 52 44 20 38 0a 4c 45 46 54 20 39 30 0a 46 4f 52 |RD 8.LEFT 90.FOR| 00000180 57 41 52 44 20 38 0a 4c 45 46 54 20 39 30 0a 46 |WARD 8.LEFT 90.F| 00000190 4f 52 57 41 52 44 20 31 36 0a 4c 45 46 54 20 39 |ORWARD 16.LEFT 9| 000001a0 30 0a 0a 54 68 65 20 6c 61 73 74 20 6c 65 66 74 |0..The last left| 000001b0 20 74 75 72 6e 20 69 73 20 76 69 74 61 6c 20 74 | turn is vital t| 000001c0 6f 20 65 6e 73 75 72 65 20 74 68 65 20 74 75 72 |o ensure the tur| 000001d0 74 6c 65 20 69 73 20 69 6e 20 74 68 65 20 63 6f |tle is in the co| 000001e0 72 72 65 63 74 20 70 6f 73 69 74 69 6f 6e 20 74 |rrect position t| 000001f0 6f 20 62 65 67 69 6e 20 74 68 65 20 6e 65 78 74 |o begin the next| 00000200 20 4b 65 79 2e 0a 0a 0a 32 2e 20 53 71 75 61 72 | Key....2. Squar| 00000210 65 73 2e 20 54 68 69 73 20 69 73 20 33 36 20 73 |es. This is 36 s| 00000220 71 75 61 72 65 73 2c 20 65 61 63 68 20 72 6f 74 |quares, each rot| 00000230 61 74 65 64 20 62 79 20 31 2f 33 36 74 68 20 6f |ated by 1/36th o| 00000240 66 20 61 20 63 69 72 63 6c 65 20 2d 20 69 6e 20 |f a circle - in | 00000250 6f 74 68 65 72 20 77 6f 72 64 73 20 31 30 b0 2e |other words 10..| 00000260 20 4e 6f 74 65 20 74 68 65 20 6e 65 73 74 65 64 | Note the nested| 00000270 20 52 45 50 45 41 54 73 2e 20 54 68 65 20 69 6e | REPEATs. The in| 00000280 6e 65 72 20 6f 6e 65 20 64 72 61 77 73 20 74 68 |ner one draws th| 00000290 65 20 73 71 75 61 72 65 73 2e 0a 0a 52 45 50 45 |e squares...REPE| 000002a0 41 54 20 33 36 0a 20 52 45 50 45 41 54 20 34 0a |AT 36. REPEAT 4.| 000002b0 20 20 46 4f 52 57 41 52 44 20 31 30 30 0a 20 20 | FORWARD 100. | 000002c0 52 49 47 48 54 20 39 30 0a 20 45 4e 44 0a 4c 45 |RIGHT 90. END.LE| 000002d0 46 54 20 31 30 0a 45 4e 44 0a 0a 6f 72 20 0a 0a |FT 10.END..or ..| 000002e0 52 45 50 45 41 54 20 33 36 20 5b 52 45 50 45 41 |REPEAT 36 [REPEA| 000002f0 54 20 34 20 5b 46 4f 52 57 41 52 44 20 31 30 30 |T 4 [FORWARD 100| 00000300 20 52 49 47 48 54 20 39 30 5d 20 4c 45 46 54 20 | RIGHT 90] LEFT | 00000310 31 30 5d 0a |10].| 00000314
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