1. Brain Teaser: In the ASCII Table at left, why does the number of control characters, numbers and alphabetic characters range from 0.. 127? (Hint: powers of two are everywhere in computing). G 20 40 96 22 42 48 68 4A 6A ASCII Table Decimal Hex Char Decimal Hex Char Decimal Hex Char Decimal Hex Char 0 (NULL) 32 (SPACE) 64 60 1 1 (START OF HEADING) 33 21 ! 65 41 97 61 a 2 2 [START OF TEXT) 34 66 B 98 62 b 3 3 (END OF TEXT) 35 23 # 67 43 99 63 4. 4 (END OF TRANSMISSION 36 24 $ 68 44 D 100 64 d 5 5 (ENQUIRY 37 25 % 69 45 E 101 65 e 6 6 TACKNOWLEDGE 38 26 & 70 46 F 102 66 f 7 7 [BELL 39 27 . 71 47 G 103 67 g 8 8 (BACKSPACE] 40 28 ( 72 H 104 h 9 9 [HORIZONTAL TAB] 41 29 73 49 105 69 i 10 [LINE FEED] 42 2A 74 106 j B [VERTICAL TAB] 43 2B + 75 4B K 107 6B k 12 [FORM FEED] 44 20 76 4C L 108 6C 1 13 [CARRIAGE RETURN) 45 20 77 4D M 109 6D m 14 SHIFT OUT) 46 2E 78 4E N 110 6E n 15 F [SHIFT INI 47 2F 1 79 4F 111 6F 16 10 [DATA LINK ESCAPE 48 30 80 50 P 112 70 17 11 [DEVICE CONTROL 1] 49 31 81 51 Q 113 71 18 9 12 [DEVICE CONTROL 2] 50 32 82 52 R 114 72 r 19 13 (DEVICE CONTROL 31 51 83 115 73 s 20 14 [DEVICE CONTROL 4] 52 34 84 54 T 116 74 t 21 15 INEGATIVE ACKNOWLEDGE) 53 35 85 55 U 117 75 u 22 16 [SYNCHRONOUS IDLE) 54 36 86 56 118 76 v 23 [ENG OF TRANS, BLOCK) 55 37 57 w 119 77 w 24 18 CANCEL 56 38 88 58 120 78 25 19 (END OF MEDIUM 57 39 9 89 59 Y 121 79 26 1A SUBSTITUTE) 58 90 5A Z 122 7A z 27 1B ESCAPE) 59 3B 91 5B [ 123 7B 28 10 [FILE SEPARATOR) 60 3C 92 124 70 1 29 1D GROUP SEPARATOR) 61 3D 93 5D ] 125 7D 30 1E (RECORD SEPARATOR) 62 SE 126 7E 31 1F (UNIT SEPARATOR) 63 3F ? 95 5F 127 7F (DEL) 0 33 53 17 OHNMONO... VIA 87 5C 94