In those days, personal computers had not yet hit the market, and for data to be read into the outsized computers of the day they had to be fed with stacks of punched cards. Back then, UMC began manufacturing using 7.6 micron process technology (the micron figure or "process dimension" expresses the smallest achievable gap between lines of metal on a chip).
那時個人電腦尚未問世、大型電腦則要靠「餵進」一疊疊的電腦卡來存取資料，當時聯華電子的製程是以 7.6 微米（微米數表示晶片上金屬電路的最小線距）起家。