That seems like a pretty small number. But, says Chiang Shu-shang of the Corporate Synergy Development Center, in the 1990s an average of more than seven billion chips a year were produced worldwide. Thus several hundred million chips could have Y2K problems. The number is even larger if you add on chips made by factories themselves for special in-house purposes.
百分之二，聽起來比例不高，但十幾年累積下來，就意味著有千禧蟲藏身的晶片高達數億顆；若加上各工廠為特殊用途而自己寫程式、自己燒錄的特殊晶片，數量更是可觀。