Monthly Sales Report - April 2001

Hsinchu, Taiwan, May 9, 2001– Taiwan Semiconductor Manufacturing Company Ltd. (“ TSMC” or “ the Company” ) (TAIEX: 2330, NYSE: TSM), today announced that net sales for April 2001 totaled NT$9,232million, representing a decrease of 21.4% from March 2001 sales. On a year-over-year basis, net sales increased 4.2% in April 2001 versus the same period a year ago, while total net sales increased 31.3% from January through April 2001, to NT$48,752 million, versus the same period a year ago.