For First-Time Users Who Need A Less Feature-Rich Version

NEW LOW PRICED, BASIC VERSION OF MICROSIM PSPICE, THE INDUSTRY STANDARD FOR
CIRCUIT SIMULATION

May 1, 1995 -- IRVINE, Calif. -- MicroSim Corporation today introduced two
new basic versions of MicroSim PSpice providing users with the leading
accuracy and convergence of MicroSim PSpice, the industry standard for
circuit simulation, without the added cost of advanced features they may
not need.

MicroSim extends the PSpice simulation product line to a new class of
users, including those who have never considered simulation before, but
want to begin simulating with a "basic" package at a low price, designers
with small analog circuits, and cost-conscious users.

"Engineers have been buying the leading analog simulator product from
MicroSim for almost a decade," said Wolfram Blume, president of MicroSim
Corporation. "We don't expect our traditional customers to switch to
MicroSim PSpice Basics and MicroSim PSpice A/D Basics+. We've been hearing
from another group of users who tell us they need a smaller scale, less
feature-rich version to cover essential simulation requirements."

MicroSim PSpice Basics for Windows for analog simulation is priced at $979
($1,300 internationally) and MicroSim PSpice A/D Basics + for Windows, for
mixed analog/digital simulation, is priced at $2,879 ($3,700
internationally). The products will be available in June.

"These first time users are considering simulation to improve the
performance and manufacturability of their design before building
anything, but are not ready to use all the features in standard MicroSim
PSpice," said Blume.

MicroSim PSpice Basics and MicroSim PSpice A/D Basics+ provide the "basic'
functionality needed for analog design, schematic entry, simulation,
waveform viewing, and select model libraries. MicroSim PSpice Basics is
limited to small circuits, while MicroSim PSpice A/D Basics+ supports
unlimited size circuits.

In addition to the MicroSim PSpice Basics capabilities, MicroSim PSpice A/D
Basics + also supports unit-delay digital simulation and comes with
digital library models of TTL, CMOS, 10K and 100K ECL, and PLDs.

Among the standard MicroSim PSpice features not included in the "basic"
versions are parametric analysis, Monte Carlo and sensitivity/worst-case
analyses, a stimulus editor, a utility for new device characterization,
performance analysis, and save/load bias point calculations. Standard
MicroSim PSpice model libraries not offered in the "basic" versions
include thyristor, magnetic, PWM, Japanese, and European models.

Other capabilities of standard MicroSim PSpice not provided in the "basic"
versions include performance or goal function analysis, digital timing and
worst-case analysis, and network licensing. The standalone Basics packages
also do not support advanced MicroSim simulation products: MicroSim PSpice
Optimizer, MicroSim Polaris (signal integrity analysis), MicroSim PLSyn
(PLD synthesis), and MicroSim Device Equations (custom device
characterization models).

MicroSim's customers are never locked into just one package. If designers
decide that they want to trade-up to any other MicroSim product. they can
upgrade at any time and receive up to 100 percent credit for the value of
their current MicroSim product. Customers maintaining their software with
annual maintenance to within one release of the most recent version
receive 100 percent credit. Upgrades of software older than one year will
receive 50 percent credit.

MicroSim introduced its flagship product, MicroSim PSpice, in 1984 as the
first SPICE-based program available for personal computers. The product is
so widely used that many corporations and universities refer to MicroSim
"PSpice" in place of the generic "SPICE" (Simulation Program With
Integrated Circuit Emphasis).

MicroSim PSpice significantly expands the capabilities of the SPICE program
developed at the University of California, Berkeley. Design iterations are
turned around faster than other packages on the market due to the
software's ability to handle large designs accurately and easily.

MicroSim is the only company with true native mixed analog/digital
simulation for PCs. The product is significantly faster and more accurate
than all the competitors that use generic macro models of digital parts or
"glued" simulation approaches. Extensive libraries for MicroSim PSpice A/D
include both typical and worst-case timing.

MicroSim offers a family of powerful, integrated EDA software products for
schematic capture (MicroSim Schematics), analog simulation (MicroSim
PSpice, MicroSim PSpice Basics), mixed analog/digital simulation (MicroSim
PSpice A/D, MicroSim PSpice A/D Basics+), PLD synthesis (MicroSim PLSyn),
logic simulation (MicroSim PLogic), analog performance optimization
(MicroSim PSpice Optimizer), printed circuit board layout (MicroSim
PCBoards and MicroSim PCBoards with Autorouter for Windows), signal
integrity analysis (MicroSim Polaris), and Mentor and Cadence integration.
MicroSim products are available for Microsoft Windows, Windows NT, DOS,
Sun, and HP.

MicroSim sells directly to engineers and through VARs (value added
resellers). "Because we do not have an expensive sales force, we can pass
our savings on to our customers and VARs," Blume said. MicroSim users
receive high-end EDA software at affordable "shrink-wrapped" prices
substantially below those of companies using a field sales force.

MicroSim applications engineers provide same-day response technical support
free to customers. More information on MicroSim products is available by
phone at (714) 770-3022 and (800) 245-3022, or via fax at (714) 455-0554,
or on Internet Sales@MicroSim.com.

MicroSim Corporation
20 Fairbanks
Irvine, California 92718 USA

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