FOR IMMEDIATE RELEASE

New release of VisSim™ Provides Integration With Mathcad 2000®

Westford, Massachusetts, September 19, 2000 - Visual Solutions Incorporated (VSI) announces the immediate availability of VisSim Version 4.5 for Windows 95/98/2000/NT. The version 4.5 upgrade is free to all VisSim Version 4 license holders; for those users with prior versions the cost of the upgrade is $ 750.

VisSim is an award winning software program for the modeling and simulation of control, communication and signal processing systems. Commercial applications of VisSim include: anti-lock brake systems (GM), turbine modeling, control and commissioning (Honeywell), PCS transceiver design (Ericsson), motion control (Pacific Scientific), aerospace guidance, navigation and control (Air Force Research Lab - Eglin AFB) and dynamic process control simulations (DuPont).

VisSim combines an intuitive drag & drop block diagram interface with a powerful simulation engine. The user builds his system model by selecting predefined blocks from a block library and graphically "wires" (connects) the blocks into a diagram. After the model is configured, a simulation is run and results of the simulation are displayed. With VisSim, users can quickly develop software or "virtual" prototypes of systems or processes to demonstrate their behavior prior to building physical prototypes. The benefits of using VisSim modeling and simulation software include faster time to market, lower overall design costs and greater assurance that the product will perform as specified.

VisSim Version 4.5 consists of a "no programming required" OLE/COM compliant integration with Mathcad 2000. This integration provides Mathcad users with a simple and seamless method for performing dynamic system simulations. With VisSim, Mathcad users can now model and simulate control, communication or signal processing systems. Mathcad users can create new, or embed existing, Mathcad documents within a VisSim model by using the new Insert Mathcad Object block. Users can dynamically exchange scalar or matrix data between VisSim and Mathcad using the simple VisSim click and wire interface - no programming required!

To optimize data exchange between VisSim and Mathcad, values can be accessed at the beginning or end of each VisSim simulation run, every time step or at a user defined update rate. All Mathcad Object blocks are saved to the VisSim diagram file with full OLE information and will automatically reestablish communication with Mathcad upon loading. There is no limit to the number of Mathcad Object blocks that can be embedded within a VisSim model.

Version 4.5 also includes an Insert OLEobject block that allows users to integrate OLE compliant objects, such as Microsoft Word or Excel documents, within a VisSim diagram. This is a major design documentation enhancement to VisSim as users can easily (with no programming required) integrate product specifications, Excel spreadsheets, PDF's or other OLE compliant documents within their VisSim diagram.

VSI's entry level products are ideally suited for the Mathcad user and include the Mathcad OLE/COM integration, MATLAB® integration tools and a SIMULINK® translator:

General Modeling & Control System Design
VisSim™ Personal Edition is an entry level version of Visual Solutions award winning Professional VisSim software - a Windows-based program for the modeling and simulation of dynamic systems.
List price: $ 495

Communication System Design
VisSim/Comm™ Personal Edition: a Windows-based software program for modeling and simulating analog, digital or mixed-mode communication systems at the signal or physical level. List Price: $ 995

Signal Processing
VisSim/SigPro™ Personal Edition: a Windows-based software program for the rapid prototyping of signal processing applications. It is ideally suited for audio, speech, imaging, test/measurement, control and medical applications.
List price: $ 795

Trial versions of the Personal edition software, application specific tutorials and marketing information are available free from the Visual Solutions web site: www.vissim.com.

About Visual Solutions
Since 1989, Visual Solutions (VSI) has been a pioneer in the development of Windows-based software for the modeling and simulation of dynamic systems. Their mission is to provide easy-to-use, powerful and affordable modeling, simulation and embedded system design software to engineering end users and OEM Technology Partners.

The core software for all VSI products is VisSim, winner of Control Magazine's 1999 Readers' Choice Award in the Software Simulation Category. VisSim software is much easier to use and offers faster simulation speeds than competitive products. Additionally, every VisSim product includes the unique VisSim Viewer™, a run-time, view-only version of VisSim that enables users to distribute models, at no charge, to individuals not licensed to use VisSim.

For more information contact:

John Gould
VP Sales & Marketing
Phone: 978 392-0100 ext.17
Fax: 978 692-3102
Email: john.gould@vissol.com