Gardena, CA (December 16, 2003) -- Intusoft announced today that its client-server product (IsSpice4 Server) was implemented as the simulation kernel for National Semiconductor's new WEBENCH Online Design Environment. The analog simulation applications within WEBENCH provide analysis of numerous types of operational amplifiers (op-amp) geared for popular end-use design, and the design of DC-DC power supplies.

National Semiconductor has announced the launch of "Amplifiers Made Simple." This is the latest WEBENCH modality, which enables a user to prescribe parameters such as supply voltage, integrator cutoff frequency and output swing to select designs containing an op-amp, and simulate the results over the web. WEBENCH similarly creates power supply circuit topologies based on a venue of selectable ICs, automatically created from the input voltage, output voltage and current specifications prescribed by the user.

Intusoft's IsSpice4 Server forms the backbone for the multi-processor simulation architecture of WEBENCH, which interfaces to the network by an intuitive graphical user interface (GUI) and waveform viewer created by National Semiconductor. "The reliability and speed of Intusoft's IsSpice4 Server has been pivotal in ensuring that WEBENCH's design, simulation and waveform viewing runs solidly and as an integrated solution for our clients," said Phil Gibson, vice president of National's Web Business. "Intusoft was selected as our premiere simulation provider, given its history with multi-processing SPICE simulation technology and superior performance in benchmarks we ran against other simulation vendors."

Lawrence G. Meares, president and founder of Intusoft, added, "Our relationship with National Semiconductor has fostered truly cutting-edge technology with WEBENCH and IsSpice4 Server. National's enterprise team has created a full-circle solution based on the primary capability for which IsSpice4 Server was designed."

IsSpice4 is licensed to run on a remote server primarily targeted for web-based services, incrementally licensed for 1, 2 or 4 processors. The package includes Intusoft's IsSpice4 simulation kernel, ICAP/4 simulation environment and associated libraries, to run on Windows 2000/2003 servers. A time-locked annual fee provides a cost effective means for customers to start a simulation web-based service. It also enables additional licenses to progressively balance end-user demand.

National has achieved several other online design tool breakthroughs for analog products including WEBENCH tools for wireless and power. To date, 60,000 visitors to the National site have registered to use the WEBENCH toolset. Usage of National's WEBENCH tool set continues to double every year.

Intusoft has sold more than 19,000 copies to date of its ICAP/4, Magnetics Designer and Test Designer software, with 150,000 copies in circulation. Its "IsSpice4" 4th-generation SPICE technology is also used as a simulation kernel for partnering companies of Intusoft.

About Intusoft

Established in 1985, Intusoft designs, develops and markets award-winning software to electronics industries worldwide. Its products target a breadth of applications for all electronic markets that employ analog, mixed-signal and systems design. Intusoft's products are marketed for the purposes of design analysis, product reliability, production yield, test automation and improved market entry. Information on Intusoft is provided at: www.intusoft.com.

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