Circuitry is the system of electric circuits inside a machine — the paths the current is meant to take, taken as a whole, not one wire. We talk about the circuitry of a phone, a radio, a car, a computer. It is a slightly technical word; electricians and people who repair gadgets use it, and so do manuals.

Circuitry is the system of electric circuits inside a machineCircuitry指的是一台機器裡整套電路系統 — the paths the current is meant to take, taken as a whole, not one wire電流本來要走的那些路徑，整體來看，不是單一一條線。We talk about the circuitry of a phone, a radio, a car, a computer我們會講一支手機、一台收音機、一輛車、一台電腦的電路。It is a slightly technical word這是個稍微技術性的字; electricians and people who repair gadgets use it電工和修理小家電的人會用它, and而 so do manuals說明書裡也會用。

Circuit is the single loop or the named path; circuitry is the network. You do not usually count it (two circuitries sounds odd); you say the circuitry or a piece of circuitry.

Circuit is the single loop or the named path; circuitry is the networkCircuit指的是單一一個迴路或那條有名字的路徑；circuitry指的是整個網絡。You do not usually count it (two circuitries sounds odd)這個字通常不會拿來數（two circuitries聽起來很怪）; you say the circuitry or a piece of circuitry你會說the circuitry整套電路，或a piece of circuitry一部分電路。

Though actually, people stretch it: writers talk about the circuitry of the brain, meaning the web of connections, not copper. That is a picture borrowed from electronics. The core sense, the one you need first, is still the electric system in a device.

Though actually不過事實上, people stretch it人們也會把這個字延伸使用: writers talk about the circuitry of the brain作家會講到大腦的迴路系統, meaning the web of connections, not copper指的是那張連結的網絡不是銅線。That is a picture borrowed from electronics這是從電子學那裡借來的一種畫面。The core sense, the one you need first, is still the electric system in a device它最核心、你最先要掌握的意思，還是裝置裡的電路系統。