(a) Refer to Table 2-5. What is the most significant nibble of the ASCII code for the letter X?

(b) How many nibbles can be stored in a 16-bit word?

(c) How many bytes does it take to make up a 24-bit word?

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TABLE 2-5 Standard ASCII codes. Character NUL (null) Start Heading Start Text End Text End Transmit. Enquiry Acknowlege Bell Backspace Horiz. Tab Line Feed Vert. Tab Form Feed Carriage Return Shift Out Shift In Data Link Esc Direct Control 1 Direct Control 2 Direct Control 3 Direct Control 4 Negative ACK Synch Idle End Trans Block Cancel End of Medium Substitue Hex Decimal Character Hex Decimal Character Hex Decimal Character Hex Decimal 0 0 1 2 3 4 5 6 7 8 9 A B С D E F 10 11 12 13 14 19 1A 466 WN-0 Escape 1B Form Separator 1C Group Separator 1D 1 2 3 5 7 8 9 11231 10 14 15 16 17 18 15 16 22 17 18 19 20 21 23 24 25 26 27 28 29 Record Separator 1E 30 Unit Separator 1F 31 Space 1 44 # $ % & ( ) * / 0 1 2 3 45678.. 9 ; VII A. < = ? 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 32 33 34 35 26 37 38 39 40 4 42 45 44 45 46 7 48 49 50 5 52 53 54 55 587 58 59 60 1 62 63 SPORSTUVWXY D F 42 45 4 45 45 47 48 4 4 0 40 4 45 50 51 52 53 54 55 56 57 58 50 5弘 8 50 50 55 55 36 41 43 47 51 56 61 Ⓒ ABCDEFGHKLMN с J 0 Q Т Z [ 1 ] A 40 41 43 44 46 4A 4B 4D 49 73 74 75 4C 76 4E 4F 59 5A 5B 5C 5D 64 65 5E 66 67 68 69 70 71 72 77 78 79 80 81 82 83 84 8.5 86 87 88 89 90 91 92 93 94 5F 95 a POJD b с d e 9 D h i j k 1 m ECOPULS WXN Р q r y Z 1 Delete 60 61 62 63 64 65 66 67 68 881288 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127