MI-84 Calculator

The calculator takes rectangular and complex number input, keeps a persistent history of earlier results, and stores scalar variables between sessions. Fractions, roots, combinatorics, test and logic functions, angle modes and a math-family menu are reached through menus rather than typed out, which keeps longer expressions manageable on a small screen. Persistent named lists can be created, edited and operated on from a STAT menu, so data sets survive between play sessions.

The mod is built for Fabric and targets 1.21.1 only, with Fabric API and Fabric Language Kotlin listed as required dependencies. It runs on the client alone, so servers and other players do not need it. The calculator can be repositioned, shown or hidden, and an inventory X button can be toggled, and three default key bindings were changed under Controls. The code is available through public source and issue links, but the mod is released under a custom license and is not open source.