Kusintha kwamagetsi ndi mtundu wa zida zamagetsi zomwe zimatha kuwongolera kuwonongeka kwaposachedwa, komwe kumazindikira kulumikizana ndi kusamvana kwa masitepe a zigawo zamagetsi (monga omasulira machubu am'munda,). Kusintha kwamagetsi kuli ndi maubwino ang'onoang'ono, olemera kwambiri, kudalirika kwakukulu, kuthamanga kwa makompyuta, zida zolankhulirana, zida zolumikizirana, zida zolumikizirana ndi zina zambiri.
Mfundo yogwira ntchito yamagetsi imatengera mawonekedwe akutembenukira kwa zida semiconductor. Tengani transistor mwachitsanzo, maziko apano akusintha, omwe alipo pakati pa otolayo ndi emitter adzasinthanso, ndikuzindikira kuti kulimbana kwa dera. Pamene maziko aposachedwa ndi zero, tratsistor ili mkhalidwe wodulidwa, palibe chomwe palibe pakati pa wotolayo ndi emitter, ndi madera asweka; Pomwe maziko apano amawonjezeka pamlingo wina, tratsistor imalowa m'malo ofatsa, pali mayendedwe akulu omwe ali pakati pa otola ndi emitter, ndi dera litatsegulidwa.