Nke a technology, tinyere oruru nke a igwe ngwá ọrụ ụlọ ọrụ, nyeere ndị US nwere nnukwu-ọnụ ọgụgụ n'ichepụta nke ịkwa igwe, anyịnya igwe, na ndị ọzọ ihe na mbubreyo narị afọ nke 19 na bịara mara dị ka American usoro nke n'ichepụta. Factory electrification ná mmalite narị afọ nke 20 na iwebata nke nzukọ akara na ndị ọzọ oru-ịzọpụta usoro kere usoro a na-akpọ uka mmepụta. Na 1876, Alexander Bell e nyere mbụ US patent maka ekwentị. Thomas Graham si laabu, otu n'ime ndị mbụ na-eme nnyocha, mepụtara ya transistor, mbụ Federal Armories n'oge ọkara narị afọ nke 19. Nke a technology, tinyere oruru nke a igwe ngwá ọrụ ụlọ ọrụ, nyeere ndị US ka nwere nnukwu-ọnụ ọgụgụ n'ichepụta nke ịkwa igwe, anyịnya igwe, na ndị ọzọ ihe na-emepụta ihe dị ka ígwè ọrụ eletrọniki.
Thomas Edison