Exhibit 12.1

Cadence Design Systems, Inc
Ratio of earnings to fixed charges
$ in thousands

						Restated
		Year ended				(FY 2002)				(FY 2001)				(FY 2000)				(FY 1999)
		January 3, 2004				December 28, 2002				December 29, 2001				December 30, 2000				January 2, 2000
Earnings
Income (loss) before income taxes		$	(30,565	)		$	144,020			$	242,148			$	67,996			$	(11,380	)
Minority interest			—				—				1,900				600				100
Earnings (losses) in equity interests			(10,251	)			(8,108	)			200				1,100				100
Fixed charges			12,783				10,570				11,165				9,798				11,633
Net ‘Earnings’ as defined		$	(7,531	)		$	162,698			$	251,213			$	76,094			$	53
Fixed Charges
Total operating lease expenses		$	23,343			$	23,300			$	25,600			$	22,200			$	25,000
Interest component of operating lease expense (deemed to be 1/3 of op. lease expense)			7,781				7,767				8,533				7,400				8,333
Interest expense			5,002				2,803				2,632				2,398				3,300
Total Fixed charges		$	12,783			$	10,570			$	11,165			$	9,798			$	11,633
Earnings to fixed charges ratio			(0.6	)			15.4				22.5				7.8				0.0
Earnings excess (deficiency)		$	(20,314	)		$	152,128			$	240,048			$	66,296			$	(11,580	)