Unaudited Reconciliation of GAAP to Non-GAAP Financial Measures
(In thousands, except per share data)

GAAP
Measure

GAAP
Percent of
Revenue

Stock
Compensation
Expense

Intangible
Asset
Amortization

Acquisition
Related
Items

Non-GAAP
Measure

Non-GAAP
Percent of
Revenue

Revenues

$190,098

Gross margin

113,192

59.5%

$     264

$      --

$   --

$113,456

59.7%

Research and

  development

52,432

27.6%

5,503

5,048

--

41,881

22.1%

Selling, general and

  administrative

39,826

20.9%

5,399

1,647

234

32,546

17.1%

Operating income

20,934

11.0%

11,166

6,695

234

39,029

20.5%

Non-GAAP Earnings Per Share

Three Months Ended
July 1, 2017

GAAP

Measure

Stock

Compensation
Expense*

Intangible
Asset
Amortization*

Acquisition
Related
Items*

Non-cash
Interest
Expense*

Income Tax
Adjustments

Non-GAAP
Measure

Net income

$16,569

$11,166

$6,695

$234

$2,640

$(3,319)

$33,985

Diluted shares

   outstanding

43,178

43,178

Diluted earnings

   per share

$    0.38

$    0.79

* Represents pre-tax amounts