IPA: //ˌmaɪ.kroʊˈsɜːr.kɪ.tri//
KK: /maɪkroʊˈsɜrkɪtri/
A system made up of very small electronic circuits that are used in various devices.
The new smartphone features advanced microcircuitry for better performance.
Microcircuitry → It is formed from "micro-" (from Greek "mikros", meaning small) and "circuitry" (from "circuit" which comes from Latin "circuitus", meaning a going around). The word refers to the small-scale electronic circuits that are used in various devices.
Think of 'small' ('micro-') circuits that 'go around' ('circuitus') to remember that microcircuitry refers to tiny electronic pathways.
No commonly confused words.