Shares of

Monolithic Power Systems

(MPWR) - Get Report

were among technology's winners Wednesday, rising 13% after the chipmaker lifted its third-quarter sales guidance.

The company now expects sales of $27 million to $29 million, up from previous guidance of $25 million to $27 million. Analysts polled by Thomson First Call had been expecting sales of $26.3 million. Monolithic said that increased demand for its DC-to-DC product segments across a broad base of applications and markets in Asia led to the upward sales revision. "We are pleased to see a faster than expected product adoption rate by our customers," the company said. "We believe that this is a result of our continuing expansion of sales and marketing efforts in the region." Shares were trading up 93 cents to $7.87.

Micros Systems

(MCRS)

fell 2% after the software maker posted fourth-quarter results that topped expectations but forecast first-quarter and full-year sales that fell just below expectations. During the most recent period, the company earned $18.1 million, or 45 cents a share, on sales of $172 million. Analysts were expecting earnings of 43 cents a share on sales of $163 million. A year ago the company earned $12.4 million, or 32 cents a share, on sales of $142.8 million.

Looking ahead, Micros Systems forecast first-quarter earnings of $12 million to $12.5 million on sales of $146 million to $149 million. Two analysts polled by Thomson First Call had been expecting the company to post sales of $150.3 million. For the full year, Micros forecast sales of $660 million to $670 million on earnings of $64 million to $66 million. Five analysts surveyed by Thomson First Call had been expecting sales of $672 million. Shares were trading down $1.14 to $44.76.

Shares of

ADC Telecommunications

( ADCT) fell 8% after the company posted mixed third-quarter results and issued fourth-quarter guidance that disappointed investors. The telecom-equipment maker posted third-quarter earnings from continuing operations of $34.1 million, or 28 cents a share, on sales of $314.6 million. Results included charges totaling 1 cent a share. Analysts were expecting earnings of 28 cents a share on sales of $318.3 million. A year ago the company earned $3.8 million, or 3 cents a share, on sales of $224.9 million.

Looking ahead, ADC forecast earnings of 24 cents to 28 cents a share on sales of $315 million to $325 million. Analysts had been expecting earnings of 30 cents a share on sales of $322.9 million. Shares were trading down $1.90 to $20.79.

Fairchild Semiconductor

(FCS)

rose 4% after the company reaffirmed its third-quarter sales guidance. The semiconductor company said it continues to expect flat sequential sales and gross margin that will be flat to slightly higher. During the second quarter, the company posted sales of $346 million on gross margins that came in at 19.9%. Analysts are expecting Fairchild to post a profit of 1 cent a share on sales of $347.6 million. "We're booking at a rate ahead of where we were at this same point a quarter ago, driven by broad-based strength across all end markets," the company said. Shares were trading up 57 cents to $16.53.

Shares of

Novellus Systems

(NLVS)

fell 3% after the company tightened its third-quarter guidance late Tuesday. The company expects earnings of 20 cents to 21 cents a share, which compares with its previous guidance of 20 cents to 22 cents a share. Sales are expected to come in at $320 million, in line with the company's previous guidance of $315 million to $325 million. Orders are expected to be between $285 million and $290 million, compared with previous guidance of $280 million to $310 million. Analysts had been expecting earnings of 22 cents a share on sales of $324.4 million. Shares were trading down 74 cents to $26.76.

Other technology movers included

Sun Microsystems

(SUNW) - Get Report

, up 9 cents to $3.82;

Microsoft

(MSFT) - Get Report

, down 2 cents to $27.16;

Sirius Satellite Radio

(SIRI) - Get Report

, down 3 cents to $6.80;

Cisco

(CSCO) - Get Report

, unchanged at $17.51;

Intel

(INTC) - Get Report

, down 4 cents to $25.53;

Oracle

(ORCL) - Get Report

, down 15 cents to $12.88; and

Lucent Technologies

( LU), unchanged at $3.05.