Computer Science editor plugin for Atto text editor has been updated to a new version v2.9-2 which is compatible for Moodle 2.7 to 2.9
Acc. to the plugin description:
Computer science equation editor plugin for Moodle 2.7, or later, using either the TeX or MathJax filter. Designed for UK A Level (post-16) Computing and Computer Science curriculum, but can be easily customised for other levels or content.
Has toolbar tabs for Operators, Arrows, Boolean logic, Set theory, Assembly language using Little Man Computer (LMC) instruction set, Fetch execute register transfer notation and Number theory symbols.
You can download the latest version of the Computer Science plugin from the Moodle plugins database here. Computer science editor plugin for atto is also maintainted by Geoffrey Rowland and is downloaded more than 1k times.