Exhibit 12

Motorola Solutions, Inc. and Subsidiaries

Computation of Ratio of Earnings to Fixed Charges

	Years Ended December 31,
(In Millions)	2011		2010		2009		2008			2007
Pretax income (loss) (1)	$	726	$	661	$	636	$	(1,020	)	$	383
Capitalized interest		—		—		—		—			—
Fixed charges (as calculated below)		164		260		256		248			376
Earnings (2)	$	890	$	921	$	892	$	(772	)	$	759
Fixed charges:
Interest expense	$	133	$	219	$	209	$	198		$	328
Rent expense interest factor		31		41		47		50			48
Total fixed charges (2)	$	164	$	260	$	256	$	248		$	376
Ratio of earnings to fixed charges		5.4		3.5		3.5		N/A	(3)		2.0

Notes

(1) After adjustments required by Item 503 (d) of SEC Regulation S-K.

(2) As defined in Item 503 (d) of SEC Regulation S-K.

(3) Earnings were inadequate to cover fixed charges for the year ended December 31, 2008 by approximately $772 million.