Common use of PRICE RANGE OF THE SHARES Clause in Contracts

PRICE RANGE OF THE SHARES. The Shares are traded on the Nasdaq National Market under the symbol "STER." The Shares began trading on the Nasdaq National Market on August 13, 1997. The following table sets forth, for the periods indicated, the high and low closing sales prices per share as reported on the Nasdaq National Market according to published sources: CLOSING SALES PRICES -------------------- HIGH LOW --------- --------- Fiscal Year ended March 31, 1998: Second Quarter ended September, 30, 1997..................................................... $ 17.88 $ 12.00 Third Quarter ended December 31, 1997........................................................ $ 23.00 $ 16.13 Fourth Quarter ended March 31, 1998.......................................................... $ 22.00 $ 16.50 Fiscal Year ended March 31, 1999: First Quarter ended June 30, 1998............................................................ $ 26.25 $ 19.63 Second Quarter ended September 30, 1998...................................................... $ 27.38 $ 16.63 Third Quarter ended December 31, 1998........................................................ $ 26.50 $ 19.25 Fourth Quarter ended March 31, 1999.......................................................... $ 25.25 $ 9.50 On June 10, 1999, the last full day of trading prior to the date of the first public announcement of Purchaser's intention to commence the Offer, the last reported sale price of the Common Stock on the Nasdaq National Market was $19.50 per share. On June 16, 1999, the last full day of trading before the commencement of the Offer, according to published sources, the last reported sale price of the Common Stock on the Nasdaq National Market was $25.1825 per share. STOCKHOLDERS ARE URGED TO OBTAIN A CURRENT MARKET QUOTATION FOR THE COMMON STOCK.

PRICE RANGE OF THE SHARES. DIVIDENDS ON THE SHARES The Shares are traded listed on the Nasdaq National Market under the symbol "STER." The Shares began trading on the Nasdaq National Market on August 13, 1997BEAM". The following table sets forth, for each of the periods indicated, the high and low closing sales prices per share as Share. HIGH LOW ---------- ---------- Year Ended December 31, 1998: First Quarter..................................... $ 7 1/4 $ 4 9/16 Second Quarter.................................... 7 1/2 4 1/2 Third Quarter..................................... 6 7/8 3 1/16 Fourth Quarter.................................... 6 1/8 3 Year Ended December 31, 1999: First Quarter..................................... $11 9/16 $ 4 5/16 Second Quarter.................................... 23 7/16 10 7/16 Third Quarter..................................... 29 3/8 14 1/4 Fourth Quarter.................................... 21 5/8 10 1/4 Year Ending December 31, 2000: First Quarter..................................... $14 11/16 $ 7 Second Quarter (through June 2, 2000)............. 18 5/8 7 1/8 On May 25, 2000, the last full trading day before the public announcement of the execution of the Merger Agreement, the last reported sales price on the Nasdaq National Market according to published sources: CLOSING SALES PRICES -------------------- HIGH LOW --------- --------- Fiscal Year ended March 31, 1998: Second Quarter ended September, 30, 1997..................................................... $ 17.88 $ 12.00 Third Quarter ended December 31, 1997........................................................ $ 23.00 $ 16.13 Fourth Quarter ended March 31, 1998.......................................................... $ 22.00 $ 16.50 Fiscal Year ended March 31, 1999: First Quarter ended June 30, 1998............................................................ $ 26.25 $ 19.63 Second Quarter ended September 30, 1998...................................................... $ 27.38 $ 16.63 Third Quarter ended December 31, 1998........................................................ $ 26.50 $ 19.25 Fourth Quarter ended March 31, 1999.......................................................... $ 25.25 $ 9.50 of the Shares was $12 11/16 per Share. On June 102, 19992000, the last full trading day before commencement of trading prior to the date of the first public announcement of Purchaser's intention to commence the Offer, the last reported sale sales price of the Common Stock on the Nasdaq National Market of the Shares was $19.50 18 9/16 per share. On June 16, 1999, the last full day of trading before the commencement of the Offer, according to published sources, the last reported sale price of the Common Stock on the Nasdaq National Market was $25.1825 per shareShare. STOCKHOLDERS ARE URGED TO OBTAIN A CURRENT MARKET QUOTATION QUOTATIONS FOR THE COMMON STOCKSHARES. The Purchaser has been advised by the Company that the Company has never declared or paid any cash dividends on the Shares. Although stock dividends have been paid on the Shares in the past, the Company has advised the Purchaser that, other than the Rights issued pursuant to the Rights Agreement, the Company has not declared or paid any stock or other non-cash dividends on the Shares in the last two years.

PRICE RANGE OF THE SHARES. DIVIDENDS The Shares are information set forth in this Section regarding the Company is entirely taken from or based upon public information, including the Company's Annual Report on Form 10-K for the fiscal year ending January 31, 1998 (the "Company Form 10-K"), and information supplied to the Purchaser by the Company. The Purchaser does not assume any responsibility for the accuracy or completeness of the information concerning the Company contained in such documents and records or for any failure by the Company to disclose events which may have occurred or may affect the significance or accuracy of any such information to the Purchaser. The Common Stock is listed for quotation on the Nasdaq Small Cap Market under the trading symbol "DSIT." The Common Stock was traded on the Nasdaq National Market under the symbol "STER.DSIT" from the Company's initial public offering on May 29, 1997, through August 17, 1998. The Shares began Common Stock was approved for trading on the Nasdaq National Small Cap Market on August 1317, 1998. The Company has not declared nor paid any cash dividends to holders of Shares since its initial public offering on May 29, 1997. The following table sets forth, for the periods indicated, the high and low closing sales bid prices per share as reported Share on the Nasdaq Small Cap Market and the Nasdaq National Market according to published sources: CLOSING SALES PRICES -------------------- Market, as applicable. HIGH LOW --------- --------- Fiscal Year ended March 31, 1998----------- ----------- FISCAL 1997: Second Quarter ended September(commencing May 29, 30, 1997..................................................... 1997)(1)............... $8 1/16 $7 1/16 Third Quarter............................................. $9 7/8 $4 7/16 Fourth Quarter............................................ $4 9/16 $1 1/2 FISCAL 1998: First Quarter............................................. $2 15/16 $1 5/8 Second Quarter............................................ $2 $ 17.88 15/16 Third Quarter............................................. $1 13/16 $ 12.00 Third Quarter ended December 31, 1997........................................................ $ 23.00 $ 16.13 13/16 Fourth Quarter ended March 31, 1998.......................................................... $ 22.00 $ 16.50 Fiscal Year ended March 31, Quarter............................................ $1 3/4 $1 FISCAL 1999: First Quarter ended June 30, 1998............................................................ $ 26.25 $ 19.63 Second Quarter ended September 30, 1998...................................................... $ 27.38 $ 16.63 Third Quarter ended December 31, 1998........................................................ $ 26.50 $ 19.25 Fourth Quarter ended March 31(through April 19, 1999.......................................................... $ 25.25 $ 9.50 On June 10, 1999, the last full day of trading prior to the date of the first public announcement of Purchaser's intention to commence the Offer, the last reported sale price of the Common Stock on the Nasdaq National Market was ).................... $19.50 per share. On June 16, 1999, the last full day of trading before the commencement of the Offer, according to published sources, the last reported sale price of the Common Stock on the Nasdaq National Market was 2 7/8 $25.1825 per share. STOCKHOLDERS ARE URGED TO OBTAIN A CURRENT MARKET QUOTATION FOR THE COMMON STOCK.1 19/32