Exhibit 12

TEXAS INSTRUMENTS INCORPORATED AND SUBSIDIARIES

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(Millions of dollars)

	2005		2004		2003		2002			2001
EARNINGS:
Net income (loss)	$	2,324	$	1,861	$	1,198	($	344	)	($	201	)
Add: Provision (benefit) for income taxes		664		560		52		(2	)		(225	)
Amortization of capitalized interest		9		10		12		15			16
Fixed charges from below		37		43		64		83			94
Total earnings (loss)	$	3,034	$	2,474	$	1,326	($	248	)		($316	)
FIXED CHARGES:
Total interest on loans (expensed)	$	9	$	21	$	39	$	57		$	61
Interest attributable to rental and lease expense		28		22		25		26			33
Fixed charges deducted from earnings		37		43		64		83			94
Capitalized interest		5		3		2		3			13
Total fixed charges	$	42	$	46	$	66	$	86		$	107
Ratio of earnings to fixed charges		72.2		53.8		20.1			*			*

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