title: Fieldata
text: # Fieldata
  
  FIELDATA (also written as Fieldata) was a pioneering computer project run by the US Army Signal Corps in the late 1950s that intended to create a single standard (as defined in MIL-STD-188A/B/C) for collecting and distributing battlefield information. In this respect it could be thought of as a generalization of the US Air Force's SAGE system that was being created at about the same time.
  
  Unlike SAGE, FIELDATA was intended to be much larger in scope, allowing information to be gathered from any number of sources and forms. Much of the FIELDATA system was the specifications for the format the data would take, leading to a character set that would be a huge influence on ASCII a few years later. FIELDATA also specified the message formats and even the electrical standards for connecting FIELDATA-standard machines together.
  
  Another part of the FIELDATA project was the design and construction of computers at several different scales, from data-input terminals at one end, to theatre-wide data processing centers at the other. Several FIELDATA-standard computers were built during the lifetime of the project, including the transportable MOBIDIC from Sylvania, and the BASICPAC and LOGICPAC from Philco. Another system, ARTOC, was intended to provide graphical output (in the form of photographic slides), but was never completed.
  
  Because FIELDATA did not specify codes for interconnection and data transmission control, different systems (like "STANDARD FORM", "COMLOGNET Common language code", "SACCOMNET (465L) Control Code") used different control functions. Intercommunication between them was difficult.
  
  FIELDATA is the original character set used internally in UNIVAC computers of the 1100 series, each six-bit character contained in six sequential bits of the 36-bit word of that computer. The direct successor to the UNIVAC 1100 is the Unisys 2200 series computers, which used FIELDATA (although ASCII is now also common with each character encoded in 1/4 of a word, or 9 bits). Because some of the FIELDATA characters are not represented in ASCII, the Unisys 2200 uses '^', '"' and '_' characters for codes $004_{oct},$ $076_{oct}$ and $077_{oct}$ respectively.
  
  The FIELDATA project ran from 1956 until it was stopped during a reorganization in 1962.
  
  ## FIELDATA characters
  
  ### Military
  
  | Tag Bit (1) | Indicator Bits (2) | Detail Bits (4) | Binary Bits (1+6) | Decimal | Octal | Glyph | Name | Comment |
  | - | - | - | - | - | - | - | - | - |
  | Supervisory code (tag bit 0) |||||||||
  | 0 | 00 | 0000 | 0:000000 | 0 | 000 | | Blank / Idle (IDL) | |
  | 0 | 00 | 0001 | 0:000001 | 1 | 001 | | Control Upper Case (CUC) | |
  | 0 | 00 | 0010 | 0:000010 | 2 | 002 | | Control Lower Case (CLC) | |
  | 0 | 00 | 0011 | 0:000011 | 3 | 003 | | Control Tab (CHT) | |
  | 0 | 00 | 0100 | 0:000100 | 4 | 004 | | Control Carriage Return (CCR) | |
  | 0 | 00 | 0101 | 0:000101 | 5 | 005 | | Control Space (CSP) | |
  | 0 | 00 | 0110 | 0:000110 | 6 | 006 | a | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 00 | 0111 | 0:000111 | 7 | 007 | b | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 00 | 1000 | 0:001000 | 8 | 010 | c | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 00 | 1001 | 0:001001 | 9 | 011 | d | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 00 | 1010 | 0:001010 | 10 | 012 | e | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 00 | 1011 | 0:001011 | 11 | 013 | f | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 00 | 1100 | 0:001100 | 12 | 014 | g | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 00 | 1101 | 0:001101 | 13 | 015 | h | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 00 | 1110 | 0:001110 | 14 | 016 | i | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 00 | 1111 | 0:001111 | 15 | 017 | j | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 0000 | 0:010000 | 16 | 020 | k | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 0001 | 0:010001 | 17 | 021 | l | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 0010 | 0:010010 | 18 | 022 | m | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 0011 | 0:010011 | 19 | 023 | n | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 0100 | 0:010100 | 20 | 024 | o | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 0101 | 0:010101 | 21 | 025 | p | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 0110 | 0:010110 | 22 | 026 | q | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 0111 | 0:010111 | 23 | 027 | r | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 1000 | 0:011000 | 24 | 030 | s | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 1001 | 0:011001 | 25 | 031 | t | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 1010 | 0:011010 | 26 | 032 | u | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 1011 | 0:011011 | 27 | 033 | v | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 1100 | 0:011100 | 28 | 034 | w | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 1101 | 0:011101 | 29 | 035 | x | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 1110 | 0:011110 | 30 | 036 | y | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 01 | 1111 | 0:011111 | 31 | 037 | z | | The first two rows of the supervisory code are not used in all applications, only where "alphabetic supervisory information" is required. COMLOGNET omits them, while SACCOMNET includes additional control characters in place of the supervisory letters. |
  | 0 | 10 | 0000 | 0:100000 | 32 | 040 | β | Dial 0 (D0) | Graphical in COMLOGNET variant. |
  | 0 | 10 | 0001 | 0:100001 | 33 | 041 | # | Dial 1 (D1) | Graphical in COMLOGNET variant. |
  | 0 | 10 | 0010 | 0:100010 | 34 | 042 | t | Dial 2 (D2) | Graphical in COMLOGNET variant. |
  | 0 | 10 | 0011 | 0:100011 | 35 | 043 | | Dial 3 (D3) | |
  | 0 | 10 | 0100 | 0:100100 | 36 | 044 | | Dial 4 (D4) | |
  | 0 | 10 | 0101 | 0:100101 | 37 | 045 | @ | Dial 5 (D5) | Graphical in COMLOGNET variant. |
  | 0 | 10 | 0110 | 0:100110 | 38 | 046 | % | Dial 6 (D6) | Graphical in COMLOGNET variant. |
  | 0 | 10 | 0111 | 0:100111 | 39 | 047 | ¢ | Dial 7 (D7) | Graphical in COMLOGNET variant. |
  | 0 | 10 | 1000 | 0:101000 | 40 | 050 | | Dial 8 (D8) | BEL in COMLOGNET. |
  | 0 | 10 | 1001 | 0:101001 | 41 | 051 | & | Dial 9 (D9) | Graphical in COMLOGNET variant. |
  | 0 | 10 | 1010 | 0:101010 | 42 | 052 | Σ | Start of Control Block (SCB, SOC) | Graphical in COMLOGNET variant. |
  | 0 | 10 | 1011 | 0:101011 | 43 | 053 | ≠ | Start of Block (SBK, SOB) | Graphical in COMLOGNET variant. |
  | 0 | 10 | 1100 | 0:101100 | 44 | 054 | ≢ | Spare, SOD | Graphical in COMLOGNET variant. |
  | 0 | 10 | 1101 | 0:101101 | 45 | 055 | ° | Spare | Graphical in COMLOGNET variant. |
  | 0 | 10 | 1110 | 0:101110 | 46 | 056 | | Spare | |
  | 0 | 10 | 1111 | 0:101111 | 47 | 057 | | Spare, Stop | |
  | 0 | 11 | 0000 | 0:110000 | 48 | 060 | | Ready to Transmit (RTT) | |
  | 0 | 11 | 0001 | 0:110001 | 49 | 061 | | Ready to Receive (RTR) | |
  | 0 | 11 | 0010 | 0:110010 | 50 | 062 | | Not Ready to Receive (NRR) | |
  | 0 | 11 | 0011 | 0:110011 | 51 | 063 | | End of Blockette (EBE, EOBK) | |
  | 0 | 11 | 0100 | 0:110100 | 52 | 064 | | End of Block (EBK, EOB) | |
  | 0 | 11 | 0101 | 0:110101 | 53 | 065 | | End of File (EOF) | |
  | 0 | 11 | 0110 | 0:110110 | 54 | 066 | | End of Control Block (ECB, EOC) | |
  | 0 | 11 | 0111 | 0:110111 | 55 | 067 | | Acknowledge Receipt (ACK, ACR) | |
  | 0 | 11 | 1000 | 0:111000 | 56 | 070 | | Repeat Block (RPT, RBK) | |
  | 0 | 11 | 1001 | 0:111001 | 57 | 071 | | Spare | Ordered ISN, NISN, CWF, Spare in some variants. |
  | 0 | 11 | 1010 | 0:111010 | 58 | 072 | | Interpret Sign (INS, ISN) | Ordered ISN, NISN, CWF, Spare in some variants. |
  | 0 | 11 | 1011 | 0:111011 | 59 | 073 | | Non-Interpret Sign (NIS, NISN) | Ordered ISN, NISN, CWF, Spare in some variants. |
  | 0 | 11 | 1100 | 0:111100 | 60 | 074 | | Control Word Follows (CWF) | Ordered ISN, NISN, CWF, Spare in some variants. |
  | 0 | 11 | 1101 | 0:111101 | 61 | 075 | | S.A.C. (SAC) | |
  | 0 | 11 | 1110 | 0:111110 | 62 | 076 | | Special Character (SPC) | ASCII ESC. |
  | 0 | 11 | 1111 | 0:111111 | 63 | 077 | | Delete (DEL) | |
  | Primary code (tag bit 1) |||||||||
  | 1 | 00 | 0000 | 1:000000 | 64 | 100 | | Master Space (MS) | |
  | 1 | 00 | 0001 | 1:000001 | 65 | 101 | | Upper Case (UC) | |
  | 1 | 00 | 0010 | 1:000010 | 66 | 102 | | Lower Case (LC) | |
  | 1 | 00 | 0011 | 1:000011 | 67 | 103 | | Tab (HT) | |
  | 1 | 00 | 0100 | 1:000100 | 68 | 104 | | Carriage Return (CR) | |
  | 1 | 00 | 0101 | 1:000101 | 69 | 105 | | Blank / Space (SP) | |
  | 1 | 00 | 0110 | 1:000110 | 70 | 106 | A | | |
  | 1 | 00 | 0111 | 1:000111 | 71 | 107 | B | | |
  | 1 | 00 | 1000 | 1:001000 | 72 | 110 | C | | |
  | 1 | 00 | 1001 | 1:001001 | 73 | 111 | D | | |
  | 1 | 00 | 1010 | 1:001010 | 74 | 112 | E | | |
  | 1 | 00 | 1011 | 1:001011 | 75 | 113 | F | | |
  | 1 | 00 | 1100 | 1:001100 | 76 | 114 | G | | |
  | 1 | 00 | 1101 | 1:001101 | 77 | 115 | H | | |
  | 1 | 00 | 1110 | 1:001110 | 78 | 116 | I | | |
  | 1 | 00 | 1111 | 1:001111 | 79 | 117 | J | | |
  | 1 | 01 | 0000 | 1:010000 | 80 | 120 | K | | |
  | 1 | 01 | 0001 | 1:010001 | 81 | 121 | L | | |
  | 1 | 01 | 0010 | 1:010010 | 82 | 122 | M | | |
  | 1 | 01 | 0011 | 1:010011 | 83 | 123 | N | | |
  | 1 | 01 | 0100 | 1:010100 | 84 | 124 | O | | |
  | 1 | 01 | 0101 | 1:010101 | 85 | 125 | P | | |
  | 1 | 01 | 0110 | 1:010110 | 86 | 126 | Q | | |
  | 1 | 01 | 0111 | 1:010111 | 87 | 127 | R | | |
  | 1 | 01 | 1000 | 1:011000 | 88 | 130 | S | | |
  | 1 | 01 | 1001 | 1:011001 | 89 | 131 | T | | |
  | 1 | 01 | 1010 | 1:011010 | 90 | 132 | U | | |
  | 1 | 01 | 1011 | 1:011011 | 91 | 133 | V | | |
  | 1 | 01 | 1100 | 1:011100 | 92 | 134 | W | | |
  | 1 | 01 | 1101 | 1:011101 | 93 | 135 | X | | |
  | 1 | 01 | 1110 | 1:011110 | 94 | 136 | Y | | |
  | 1 | 01 | 1111 | 1:011111 | 95 | 137 | Z | | |
  | 1 | 10 | 0000 | 1:100000 | 96 | 140 | ) | | |
  | 1 | 10 | 0001 | 1:100001 | 97 | 141 | - | | |
  | 1 | 10 | 0010 | 1:100010 | 98 | 142 | + | | |
  | 1 | 10 | 0011 | 1:100011 | 99 | 143 | < | | |
  | 1 | 10 | 0100 | 1:100100 | 100 | 144 | = | | |
  | 1 | 10 | 0101 | 1:100101 | 101 | 145 | > | | |
  | 1 | 10 | 0110 | 1:100110 | 102 | 146 | _ | | & in UNIVAC. |
  | 1 | 10 | 0111 | 1:100111 | 103 | 147 | $ | | |
  | 1 | 10 | 1000 | 1:101000 | 104 | 150 | * | | |
  | 1 | 10 | 1001 | 1:101001 | 105 | 151 | ( | | |
  | 1 | 10 | 1010 | 1:101010 | 106 | 152 | " | | % in UNIVAC. |
  | 1 | 10 | 1011 | 1:101011 | 107 | 153 | : | | |
  | 1 | 10 | 1100 | 1:101100 | 108 | 154 | ? | | |
  | 1 | 10 | 1101 | 1:101101 | 109 | 155 | ! | | |
  | 1 | 10 | 1110 | 1:101110 | 110 | 156 | , | | |
  | 1 | 10 | 1111 | 1:101111 | 111 | 157 | | Stop (ST) | |
  | 1 | 11 | 0000 | 1:110000 | 112 | 160 | 0 | | |
  | 1 | 11 | 0001 | 1:110001 | 113 | 161 | 1 | | |
  | 1 | 11 | 0010 | 1:110010 | 114 | 162 | 2 | | |
  | 1 | 11 | 0011 | 1:110011 | 115 | 163 | 3 | | |
  | 1 | 11 | 0100 | 1:110100 | 116 | 164 | 4 | | |
  | 1 | 11 | 0101 | 1:110101 | 117 | 165 | 5 | | |
  | 1 | 11 | 0110 | 1:110110 | 118 | 166 | 6 | | |
  | 1 | 11 | 0111 | 1:110111 | 119 | 167 | 7 | | |
  | 1 | 11 | 1000 | 1:111000 | 120 | 170 | 8 | | |
  | 1 | 11 | 1001 | 1:111001 | 121 | 171 | 9 | | |
  | 1 | 11 | 1010 | 1:111010 | 122 | 172 | ' | | |
  | 1 | 11 | 1011 | 1:111011 | 123 | 173 | ; | | |
  | 1 | 11 | 1100 | 1:111100 | 124 | 174 | / | | |
  | 1 | 11 | 1101 | 1:111101 | 125 | 175 | . | | |
  | 1 | 11 | 1110 | 1:111110 | 126 | 176 | | Special Character (SPEC) | |
  | 1 | 11 | 1111 | 1:111111 | 127 | 177 | | Backspace (BS) | |
  
  ### UNIVAC
  
  The code version used on the UNIVAC was based on the second half (primary code) of the military version with some changes.
  
  | Indicator Bits (2) | Detail Bits (4) | Binary Bits (6) | Decimal | Octal | Glyph | Name | Comments |
  | - | - | - | - | - | - | - | - |
  | 00 | 0000 | 000000 | 0 | 00 | @ | | Sometimes switched with Δ |
  | 00 | 0001 | 000001 | 1 | 01 | [ | | |
  | 00 | 0010 | 000010 | 2 | 02 | ] | | |
  | 00 | 0011 | 000011 | 3 | 03 | # | | Line Feed (LF) on 1107 and 1108 |
  | 00 | 0100 | 000100 | 4 | 04 | Δ | Delta | Carriage Return (CR) on 1107 and 1108 |
  | 00 | 0101 | 000101 | 5 | 05 | | Blank / Space (SP) | |
  | 00 | 0110 | 000110 | 6 | 06 | A | | |
  | 00 | 0111 | 000111 | 7 | 07 | B | | |
  | 00 | 1000 | 001000 | 8 | 10 | C | | |
  | 00 | 1001 | 001001 | 9 | 11 | D | | |
  | 00 | 1010 | 001010 | 10 | 12 | E | | |
  | 00 | 1011 | 001011 | 11 | 13 | F | | |
  | 00 | 1100 | 001100 | 12 | 14 | G | | |
  | 00 | 1101 | 001101 | 13 | 15 | H | | |
  | 00 | 1110 | 001110 | 14 | 16 | I | | |
  | 00 | 1111 | 001111 | 15 | 17 | J | | |
  | 01 | 0000 | 010000 | 16 | 20 | K | | |
  | 01 | 0001 | 010001 | 17 | 21 | L | | |
  | 01 | 0010 | 010010 | 18 | 22 | M | | |
  | 01 | 0011 | 010011 | 19 | 23 | N | | |
  | 01 | 0100 | 010100 | 20 | 24 | O | | |
  | 01 | 0101 | 010101 | 21 | 25 | P | | |
  | 01 | 0110 | 010110 | 22 | 26 | Q | | |
  | 01 | 0111 | 010111 | 23 | 27 | R | | |
  | 01 | 1000 | 011000 | 24 | 30 | S | | |
  | 01 | 1001 | 011001 | 25 | 31 | T | | |
  | 01 | 1010 | 011010 | 26 | 32 | U | | |
  | 01 | 1011 | 011011 | 27 | 33 | V | | |
  | 01 | 1100 | 011100 | 28 | 34 | W | | |
  | 01 | 1101 | 011101 | 29 | 35 | X | | |
  | 01 | 1110 | 011110 | 30 | 36 | Y | | |
  | 01 | 1111 | 011111 | 31 | 37 | Z | | |
  | 10 | 0000 | 100000 | 32 | 40 | ) | | |
  | 10 | 0001 | 100001 | 33 | 41 | - | | |
  | 10 | 0010 | 100010 | 34 | 42 | + | | |
  | 10 | 0011 | 100011 | 35 | 43 | < | | |
  | 10 | 0100 | 100100 | 36 | 44 | = | | |
  | 10 | 0101 | 100101 | 37 | 45 | > | | |
  | 10 | 0110 | 100110 | 38 | 46 | & | | Changed from _ in military version. |
  | 10 | 0111 | 100111 | 39 | 47 | $ | | |
  | 10 | 1000 | 101000 | 40 | 50 | * | | |
  | 10 | 1001 | 101001 | 41 | 51 | ( | | |
  | 10 | 1010 | 101010 | 42 | 52 | % | | Changed from " in military version. |
  | 10 | 1011 | 101011 | 43 | 53 | : | | |
  | 10 | 1100 | 101100 | 44 | 54 | ? | | |
  | 10 | 1101 | 101101 | 45 | 55 | ! | | |
  | 10 | 1110 | 101110 | 46 | 56 | , | | |
  | 10 | 1111 | 101111 | 47 | 57 | \ | | Stop sign (🛑︎) on 1107 and 1108 |
  | 11 | 0000 | 110000 | 48 | 60 | 0 | | |
  | 11 | 0001 | 110001 | 49 | 61 | 1 | | |
  | 11 | 0010 | 110010 | 50 | 62 | 2 | | |
  | 11 | 0011 | 110011 | 51 | 63 | 3 | | |
  | 11 | 0100 | 110100 | 52 | 64 | 4 | | |
  | 11 | 0101 | 110101 | 53 | 65 | 5 | | |
  | 11 | 0110 | 110110 | 54 | 66 | 6 | | |
  | 11 | 0111 | 110111 | 55 | 67 | 7 | | |
  | 11 | 1000 | 111000 | 56 | 70 | 8 | | |
  | 11 | 1001 | 111001 | 57 | 71 | 9 | | |
  | 11 | 1010 | 111010 | 58 | 72 | ' | | |
  | 11 | 1011 | 111011 | 59 | 73 | ; | | |
  | 11 | 1100 | 111100 | 60 | 74 | / | | |
  | 11 | 1101 | 111101 | 61 | 75 | . | | |
  | 11 | 1110 | 111110 | 62 | 76 | ⌑ | Lozenge | |
  | 11 | 1111 | 111111 | 63 | 77 | ≠ | Not Equal | Idle character (IDLE) on some models |
  
  ## Character map
  
  ### Military version
  
  The following table is representative of a reference version of the military set, as described in Leubbert (1960b). Various other variants exist, with in some cases dramatic differences in the supervisory code (the first four rows 0–3). The letters in the first two rows are intended for use in "alphabetic supervisory information".
  
  FIELDATA (military) :
  
  | | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 0x | IDL | CUC | CLC | CHT | CCR | CSP | a 0061 | b 0062 | c 0063 | d 0064 | e 0065 | f 0066 | g 0067 | h 0068 | i 0069 | j 006A |
  | 1x | k 006B | l 006C | m 006D | n 006E | o 006F | p 0070 | q 0071 | r 0072 | s 0073 | t 0074 | u 0075 | v 0076 | w 0077 | x 0078 | y 0079 | z 007A |
  | 2x | D0 | D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | SCB | SBK | | | | |
  | 3x | RTT | RTR | NRR | EBE | EBK | EOF | ECB | ACK | RPT | | INS | NIS | CWF | SAC | SPC | DEL |
  | 4x | MS | UC | LC | HT | CR | SP | A 0041 | B 0042 | C 0043 | D 0044 | E 0045 | F 0046 | G 0047 | H 0048 | I 0049 | J 004A |
  | 5x | K 004B | L 004C | M 004D | N 004E | O 004F | P 0050 | Q 0051 | R 0052 | S 0053 | T 0054 | U 0055 | V 0056 | W 0057 | X 0058 | Y 0059 | Z 005A |
  | 6x | ) 0029 | - 002D | + 002B | < 003C | = 003D | > 003E | _ 005F | $ 0024 | * 002A | ( 0028 | " 0022 | : 003A | ? 003F | ! 0021 | , 002C | STOP |
  | 7x | 0 0030 | 1 0031 | 2 0032 | 3 0033 | 4 0034 | 5 0035 | 6 0036 | 7 0037 | 8 0038 | 9 0039 | ' 0027 | ; 003B | / 002F | . 002E | SPEC | BS |
  
  ### UNIVAC version
  
  The code version used on the UNIVAC was based on the second half (6-bit primary code) of the military version with some changes.
  
  FIELDATA (UNIVAC) :
  
  | | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 0x | @ 0040 | [ 005B | ] 005D | #/LF | Δ/CR | SP | A 0041 | B 0042 | C 0043 | D 0044 | E 0045 | F 0046 | G 0047 | H 0048 | I 0049 | J 004A |
  | 1x | K 004B | L 004C | M 004D | N 004E | O 004F | P 0050 | Q 0051 | R 0052 | S 0053 | T 0054 | U 0055 | V 0056 | W 0057 | X 0058 | Y 0059 | Z 005A |
  | 2x | ) 0029 | - 002D | + 002B | < 003C | = 003D | > 003E | & 0026 | $ 0024 | * 002A | ( 0028 | % 0025 | : 003A | ? 003F | ! 0021 | , 002C | \/🛑︎ 005C |
  | 3x | 0 0030 | 1 0031 | 2 0032 | 3 0033 | 4 0034 | 5 0035 | 6 0036 | 7 0037 | 8 0038 | 9 0039 | ' 0027 | ; 003B | / 002F | . 002E | ⌑ 2311 | ≠/IDL |
  
  ## Footnotes
  
  * 1 2 3 Mackenzie 1980.
  * ↑ Military Communication System Technical Standard, MIL-STD-188A, 1958-04-25
  * ↑ Military Communication System Technical Standard, MIL-STD-188B, 1964-02-24
  * ↑ Military Communication System Technical Standard, MIL-STD-188C, 1969-11-24
  * 1 2 3 4 5 6 7 8 Jennings 2020.
  * ↑ Kent, Allen; Lancour, Harold (1971). Encyclopedia of Library and Information Science: Volume 5 - Circulation to Coordinate Indexing. CRC Press. pp. 395, 398. ISBN 9780824720056.
  * ↑ "Army Tactical Operations Central (ARTOC) information system". sr-ix.com.
  * ↑ "THE ARTOC". Man in Command Information Processing Systems--A Research Program. 1963. pp. 1–4.
  * ↑ International Telephone & Telegraph Corporation (ITT) (1968). Reference Data for Radio Engineers (5 ed.). Howard W. Sams and Co. pp. Appendix. ISBN 978-0-672-20678-8. Retrieved 2016-05-23.
  * 1 2 Leubbert 1960a, p. 196.
  * 1 2 3 4 5 6 7 8 Walker 1996.
  * ↑ Leubbert 1960b.
  
  ## References and further reading
  
  * Fleming, George; James, Nathan L. (2002-12-17). "Univac Fieldata Codes". 1.0. Greenbelt, USA: National Space Science Data Center (NSSDC), NASA Goddard Space Flight Center. Archived from the original on 2016-05-24. Retrieved 2016-05-24.
  * Haralambous, Yannis (September 2007). Fonts & Encodings. Translated by Horne, P. Scott (1st ed.). Sebastopol, California, USA: O'Reilly Media, Inc. p. 29. ISBN 978-0-596-10242-5.
  * Jennings, Thomas Daniel (2020-03-17) [1999]. "An annotated history of some character codes or ASCII: American Standard Code for Information Infiltration". Sensitive research (SR-IX). Retrieved 2020-03-17.
  * Leubbert, William F. (1960a) [1959-12-01/03 (International Workshop on Managing Requirements Knowledge)]. Written at U.S. Army Signal Research and Development Laboratory, Fort Monmouth, New Jersey, USA. Data Transmission Equipment Concepts for FIELDATA (PDF). 1959 Proceedings of the Western Joint Computer Conference (WJCC). Boston, USA: American Federation of Information Processing Societies (AFIPS). pp. 189–196. doi:10.1109/AFIPS.1959.27. Archived (PDF) from the original on 2016-05-23. Retrieved 2016-05-23.
  * Leubbert, William F. (September 1960b). "Data Processing as a Tool for Generalizing Communications Systems". Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics. 79 (4): 431–436. doi:10.1109/TCE.1960.6367290. S2CID 51649324.
  * Mackenzie, Charles E. (1980). Coded Character Sets, History and Development. The Systems Programming Series (1 ed.). Addison-Wesley Publishing Company, Inc. pp. 61, 64, 86. ISBN 978-0-201-14460-4. LCCN 77-90165. Retrieved 2016-05-22.
  * Walker, John (1996-08-06). "UNIVAC 1100 Series FIELDATA Code". UNIVAC Memories. Archived from the original on 2016-05-22. Retrieved 2016-05-22.
  