Fieldata


FIELDATA was a pioneering computer project run by the US Army Signal Corps in the late 1950s that intended to create a single standard 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, but was never completed.
Because FIELDATA did not specify codes for interconnection and data transmission control, different systems 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 use FIELDATA to this day. Because some of the FIELDATA characters are not represented in ASCII, the Unisys 2200 uses '^', '"' and '_' characters for codes 004oct, 076oct and 077oct respectively.
The FIELDATA project ran from 1956 until it was stopped during a reorganization in 1962.

FIELDATA characters

Military

UNIVAC

The code version used on the UNIVAC was based on the second half of the military version with some changes.
Indicator Bits Detail Bits Binary Bits DecimalOctalGlyphNameComments
000000000000000@Sometimes switched with Δ
000001000001101
000011000011303#Line Feed on 1107 and 1108
000100000100404ΔDeltaCarriage Return on 1107 and 1108
000101000101505Blank / Space
1000011000013341-
1000101000103442+
1000111000113543<
1001001001003644=
1001011001013745>
1001101001103846&Changed from _ in military version.
1001111001113947$
1010001010004050*
1010011010014151 on 1107 and 1108
11000011000048600
11000111000149611
11001011001050622
11001111001151633
11010011010052644
11010111010153655
11011011011054666
11011111011155677
11100011100056708
11100111100157719
1110101110105872'
1110111110115973;
1111001111006074/
1111011111016175.
1111101111106276⌑Lozenge
1111111111116377≠Not EqualIdle character on some models

Character map

Military version

The following table is representative of a reference version of the military set, as described in. Various other variants exist, with in some cases dramatic differences in the supervisory code. The letters in the first two rows are intended for use in "alphabetic supervisory information".

UNIVAC version

The code version used on the UNIVAC was based on the second half of the military version with some changes.

Footnotes