トランジスタ

Gendai no konpyūtā de wa, toranjisuta ga shūseki kairo no shinpōbu to shite tsukawarete iru.

In modern computers, transistors are used as the core component of integrated circuits.

kono radio wa, transistor o shiyō to shite onsei o saisei shimasu

This radio uses transistors to play back sound.