Exhibit 12

TEXAS INSTRUMENTS INCORPORATED AND SUBSIDIARIES

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(Millions of dollars)

	2004		2003		2002			2001			2000
EARNINGS:
Income (loss) before cumulative effect of an accounting change	$	1,861	$	1,198	$	(344	)	$	(201	)	$	3,087
Add: Provision (benefit) for income taxes		560		52		(2	)		(225	)		1,491
Amortization of capitalized interest		10		12		15			16			17
Fixed charges from below		43		64		83			94			107
Total earnings (loss)	$	2,474	$	1,326	$	(248	)	$	(316	)	$	4,702
FIXED CHARGES:
Interest on loans (expensed portion)	$	21	$	39	$	57		$	61		$	75
Interest attributable to rental and lease expense		22		25		26			33			32
Fixed charges deducted from earnings		43		64		83			94			107
Capitalized interest		3		2		3			13			23
Total fixed charges	$	46	$	66	$	86		$	107		$	130
Ratio of earnings to fixed charges		53.8		20.1		*			*			36.2

* The ratio is not meaningful. The coverage deficiency was $334 million in year 2002 and $423 million in year 2001.