Gun data computer

[citation needed] TACFIRE used the AN/GYK-12, a second-generation mainframe computer developed primarily by Litton Industries for Army divisional field artillery (DIVARTY) units.

It had two configurations (division and battalion level) housed in mobile command shelters.

As of 2009, the U.S. Army was transitioning from a version based on a Sun Microsystems SPARC computer running the Linux kernel to a version based on laptop computers running the Microsoft Windows operating system.

One reason for a lack of surviving examples of early units was the use of radium on the dials.

As a result they were classified as hazardous waste and were disposed of by the United States Department of Energy.