VALUATION AND QUALIFYING ACCOUNTS

62 Months Ended

Dec. 31, 2012

VALUATION AND QUALIFYING ACCOUNTS

TERADYNE, INC.

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

Column A	Column B		Column C		Column D		Column E		Column F
Description	Balance at Beginning of Period		Additions Charged to Cost and Expenses		Other		Deductions		Balance at End of Period
	(in thousands)
Valuation reserve deducted in the balance sheet from the asset to which it applies:
Accounts receivable:
2012 Allowance for doubtful accounts	$	4,102	$	78	$	—	$	62	$	4,118
2011 Allowance for doubtful accounts	$	3,752	$	—	$	429	$	79	$	4,102
2010 Allowance for doubtful accounts	$	3,770	$	—	$	—	$	18	$	3,752

Column A	Column B		Column C		Column D		Column E		Column F
Description	Balance at Beginning of Period		Additions Charged to Cost and Expenses		Other		Deductions		Balance at End of Period
	(in thousands)
Valuation reserve deducted in the balance sheet from the asset to which it applies:
Inventory:
2012 Inventory reserve	$	123,512	$	26,849	$	5,353	$	13,876	$	141,838
2011 Inventory reserve	$	122,434	$	11,601	$	6,815	$	17,338	$	123,512
2010 Inventory reserve	$	125,320	$	5,971	$	4,110	$	12,967	$	122,434