BALANCE SHEET DETAILS

6 Months Ended

Jan. 31, 2012

The following tables provide details of selected balance sheet items:



	Jan 31, 2012			July 31, 2011
Accounts receivable:
Billed	$	514,976		$	553,500
Unbilled	89,781			101,652
Total	604,757			655,152
Less: Allowances for doubtful accounts	(9,847		)	(8,383		)
	$	594,910		$	646,769

Unbilled receivables principally relate to long-term contracts recorded under the percentage-of-completion method of accounting.



	Jan 31, 2012		July 31, 2011
Inventories:
Raw materials and components	$	101,720	$	102,745
Work-in-process	110,538		96,601
Finished goods	233,373		245,496
	$	445,631	$	444,842



	Jan 31, 2012			July 31, 2011
Property, plant and equipment:
Property, plant and equipment	$	1,750,427		$	1,705,559
Less: Accumulated depreciation and amortization	(925,877		)	(910,960		)
	$	824,550		$	794,599