Ikhebula elingangeni manzi, elaziwa nangokuthi ipulaki elingangeni manzi nesixhumi esingangeni manzi, iyipulaki elisebenza ngendlela engangeni manzi, futhi lingahlinzeka ngoxhumano oluphephile noluthembekile lukagesi namasignali. Isibonelo: Izibani zomgwaqo ze-LED, izinsiza zamandla edrayivu ye-LED, izibonisi ze-LED, izindlu zezibani, c...
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