If you saw the movie The Martin you will understand how important it is to always have a good ASCII chart at hand. This is the one I like the best and have used for years:

                                                           18 November 1985
                                Z-NEWS 307
  • * * * * * * * * * * * * * * * * *
  • Full ASCII Character Set *
  • * * * * * * * * * * * * * * * * *
       == === === ==   == === ==     == === =   === === ===
        0 00h NUL ^@   32 20h SP     64 40h @    96 60h `
        1 01h SOH ^A   33 21h !      65 41h A    97 61h a
        2 02h STX ^B   34 22h "      66 42h B    98 62h b
        3 03h ETX ^C   35 23h #      67 43h C    99 63h c
        4 04h EOT ^D   36 24h $      68 44h D   100 64h d
        5 05h ENQ ^E   37 25h %      69 45h E   101 65h e
        6 06h ACK ^F   38 26h &      70 46h F   102 66h f
        7 07h BEL ^G   39 27h '      71 47h G   103 67h g
        8 08h BS  ^H   40 28h (      72 48h H   104 68h h
        9 09h HT  ^I   41 29h )      73 49h I   105 69h i
       10 0Ah LF  ^J   42 2Ah *      74 4Ah J   106 6Ah j
       11 0Bh VT  ^K   43 2Bh +      75 4Bh K   107 6Bh k
       12 0Ch FF  ^L   44 2Ch ,      76 4Ch L   108 6Ch l
       13 0Dh CR  ^M   45 2Dh -      77 4Dh M   109 6Dh m
       14 0Eh SO  ^N   46 2Eh .      78 4Eh N   110 6Eh n
       15 0Fh SI  ^O   47 2Fh /      79 4Fh O   111 6Fh o
       -- --- --- --   -- --- --     -- --- -   --- --- ---
       16 10h DLE ^P   48 30h 0      80 50h P   112 70h p
       17 11h DC1 ^Q   49 31h 1      81 51h Q   113 71h q
       18 12h DC2 ^R   50 32h 2      82 52h R   114 72h r
       19 13h DC3 ^S   51 33h 3      83 53h S   115 73h s
       20 14h DC4 ^T   52 34h 4      84 54h T   116 74h t
       21 15h NAK ^U   53 35h 5      85 55h U   117 75h u
       22 16h SYN ^V   54 36h 6      86 56h V   118 76h v
       23 17h ETB ^W   55 37h 7      87 57h W   119 77h w
       24 18h CAN ^X   56 38h 8      88 58h X   120 78h x
       25 19h EM  ^Y   57 39h 9      89 59h Y   121 79h y
       26 1Ah SUB ^Z   58 3Ah :      90 5Ah Z   122 7Ah z
       27 1Bh ESC ^[   59 3Bh ;      91 5Bh [   123 7Bh {
       28 1Ch FS  ^\   60 3Ch <      92 5Ch \   124 7Ch |
       29 1Dh GS  ^]   61 3Dh =      93 5Dh ]   125 7Dh }
       30 1Eh RS  ^^   62 3Eh >      94 5Eh ^   126 7Eh ~
       31 1Fh US  ^_   63 3Fh ?      95 5Fh _   127 7Fh DEL
       == === === ==   == === ==     == === =   === === ===
    Legend:  h = Hexadecimal; ^ = CTRL (Control Key), except 94 = caret and
             30 = <CTRL-caret>.
     Notes:  1. To obtain codes 0 to 31, console Control Key is pressed
             while simultaneously pressing Letter Key, e.g., <CTRL-G> is
             ^G, the bell character.
             2. Control Key subtracts decimal 64 (40h) from Letter Key
             pressed.

Z-News 307 is Copyright 1985 Echelon, Inc [Now out of business]. All Rights Reserved. Permission to reprint, wholly or partially, automatically granted if source credit is given to Echelon.