IPA: /ˈsɜːrkɪtʃəri/
KK: /ˈsɜːrkɪtʃəri/
A system of connected electrical components that allows electricity to flow and perform tasks.
The circuitry in the new smartphone is more efficient than in previous models.
Circuitry → It is formed from "circuit" (from Latin "circuitus", meaning a going around) and the suffix "-ry" (meaning a collection or state of). The word "circuitry" refers to the collection or system of circuits, particularly in electronics.
Think of a 'going around' ('circuit') and a collection of those paths ('-ry') — that's what circuitry means, a system of pathways for electrical flow.
No commonly confused words.