Updated from 12:47 p.m. EDT

Shares of

Agilent Technologies

(A) - Get Report

were among the worst-performing technology stocks Friday, falling 12.1% after the company announced fourth-quarter earnings that fell below expectations and warned that first-quarter earnings would also be soft.

Excluding items, the chipmaker earned 30 cents a share during the fourth quarter on sales of $1.82 billion. Analysts surveyed by Thomson First Call were expecting earnings of 31 cents a share on sales of $1.87 billion. Looking ahead, Agilent forecast first-quarter earnings of 14 cents to 21 cents a share on sales of $1.6 billion to $1.7 billion. Analysts had been expecting earnings of 27 cents a share on sales of $1.82 billion. Shares traded down $3.10 to $22.58.

Despite posting a third-quarter loss on a 55% sales decline, shares of

GoAmerica

(GOAM)

rose 26.7% Friday on big volume. The wireless communications company posted a loss of 61 cents a share on sales of $1.4 million. A year earlier, the company posted a loss of $1.48 a share on sales of $3.1 million. GoAmerica said that it continued to improve the payment profile of its subscriber base by eliminating subscribers with poor payment performance. The subscriber cuts, however, contributed to the sales decline during the quarter. Shares traded up $2.48 to $11.78 on volume of almost 100 times its normal daily trading volume.

Shares of

Dell

(DELL) - Get Report

rose 8.6% after the company posted solid third-quarter earnings results and backed fourth-quarter estimates. The computer maker earned 33 cents a share during the third quarter on sales of $12.5 billion. Analysts were expecting earnings of 33 cents a share on sales of $12.5 billion. Solid notebook computer sales and strong growth in Europe, the Middle East and Africa propelled third-quarter results. Looking ahead, the company forecast fourth-quarter earnings of 36 cents a share on sales of $13.5 billion, in line with estimates. Shares traded up $3.19 to $40.44.

Ericsson

( ERICY) rose 5.9% after the company announced an expanded agreement with T-Mobile International, a subsidiary of

Deutsche Telekom

( DT). The terms call for Ericsson to expand and upgrade T-Mobile's wireless network immediately. Shares traded up $1.87 to $33.35.

Shares of

KongZhong

(KONG)

rose 18.4% after the company posted big jumps in earnings and sales during the third quarter. The provider of wireless services posted a profit of 15 cents a share on sales of $12.4 million. A year ago the company earned 2 cents a share on sales of $2 million. Looking ahead, KongZhong forecast fourth-quarter sales of $12.5 million to $13 million. Shares traded up $1.40 to $9.

Other technology volume leaders included

Microsoft

(MSFT) - Get Report

, down 1 cent to $29.97;

Nortel Networks

( NT), down 34 cents to $3.03;

Intel

(INTC) - Get Report

, up 52 cents to $23.69;

Sirius Satellite Radio

(SIRI) - Get Report

, up 32 cents to $4.17;

Dell

(DELL) - Get Report

, up $3.19 to $40.44;

Cisco

(CSCO) - Get Report

, up 52 cents to $19.26;

Lucent

( LU), up 7 cents to $3.90; and

Oracle

(ORCL) - Get Report

, up 25 cents to $13.39.