CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 29, 2012	May 01, 2011
Revenue	$ 924,877	$ 962,039
Cost of revenue	461,513	477,536
Gross profit	463,364	484,503
Operating expenses
Research and development	283,902	231,524
Sales, general and administrative	106,636	98,117
Total operating expenses	390,538	329,641
Income from operations	72,826	154,862
Interest income	5,198	5,313
Other income (expense), net	(929)	(3,690)
Income before income tax expense	77,095	156,485
Income tax expense	16,658	21,266
Net income	$ 60,437	$ 135,219
Basic net income per share	$ 0.10	$ 0.23
Shares used in basic per share computation (in shares)	615,780	594,802
Diluted net income per share	$ 0.10	$ 0.22
Shares used in diluted per share computation (in shares)	623,786	613,474