Updated from 2:41 p.m. EST

Shares of MRV Communications ( MRVC) were among technology's winners Friday, rising 8.6% after the company posted fourth-quarter earnings and sales above expectations.

The network equipment maker earned $918,000, or 1 cent a share, on sales of $81.9 million. Analysts polled by Thomson First Call were expecting a loss of 1 cent a share on sales of $74 million. A year ago the company posted a loss of $4.9 million, or 5 cents a share, on sales of $69.1 million. Fourth-quarter earnings were helped by strong fiber-to-the-premises deployments, which contributed to a 21% jump in sales to the Americas. Looking ahead, MRV forecast first-quarter sales of $65 million to $70 million, which is in line with analysts' expectations. Shares traded up 30 cents to $3.82.

MKS Instruments ( MKSI) rose 5.8% after the company posted fourth-quarter results that were better than expected and said that it would post first-quarter earnings that could top forecasts on sales that are better than expectations. Excluding items, the semiconductor technology company earned $7.4 million, or 14 cents a share, on sales of $130.9 million. Analysts were expecting earnings of 10 cents a share on sales of $117.5 million. Looking ahead, MKS said that adjusted earnings could range from 6 cents to 12 cents a share on sales of $115 million to $125 million. Analysts had been expecting earnings of 7 cents a share on sales of $109 million. Shares traded up 99 cents to $18.10.

Shares of Arris Group ( ARRS) rose 16.1% after the telecommunications technology company posted fourth-quarter results that topped expectations and forecast first-quarter sales that are higher than expectations. The company posted pro forma earnings of 4 cents a share on sales of $129.5 million. Analysts were expecting earnings of 3 cents a share on sales of $127.2 million. Looking ahead, Arris forecast adjusted earnings of 1 cent to 5 cents a share on sales of $127 million to $137 million. Analysts are expecting earnings of 4 cents a share on sales of $126 million. Shares traded up 88 cents to $6.36.

Dell ( DELL) fell 3.8% after the company posted mixed fourth-quarter results and warned that first-quarter sales results would fall slightly below expectations. Excluding items, the computer giant posted earnings of 37 cents a share on sales of $13.46 billion. Analysts were expecting earnings of 36 cents a share on sales of $13.54 billion. Looking ahead, Dell forecast first-quarter earnings of 37 cents a share, a penny ahead of expectations, on sales of $13.4 billion, which is slightly below expectations of $13.5 billion. Shares traded down $1.58 to $39.99.

Shares of Digital Impact ( DIGI) rose 27.6% after the maker of digital marketing products received a $2-a-share bid from infoUSA ( IUSA). The deal would represent a 38% premium over Digital Impact's closing price on Thursday of $1.45. "A combination of infoUSA and Digital Impact would create a powerful leader in the fast-growing digital marketing space," infoUSA said. infoUSA said that it has communicated with Digital Impact but has not had substantive discussions regarding the terms or conditions of a possible transaction. For its part, Digital Impact acknowledged the offer and said that its board would review it. Shares of Digital Impact traded up 40 cents to $1.85, while shares of infoUSA traded up 17 cents to $11.44.

Other technology movers included Intel ( INTC), up 67 cents to $24.17; Altair Nanotech ( ALTI), down 37 cents to $4.40; Cisco ( CSCO), up 12 cents to $17.70; Microsoft ( MSFT), down 9 cents to $25.97; Oracle ( ORCL), up 21 cents to $13.35; Sirius Satellite ( SIRI), up 5 cents to $5.98; and Lucent ( LU), up 8 cents to $3.36.

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