<s>
ICAP/4	B-Algorithm
is	O
a	O
family	O
of	O
commercial	O
SPICE	B-Protocol
analog	O
circuit	B-Language
simulation	I-Language
software	O
developed	O
and	O
sold	O
by	O
Intusoft	O
for	O
use	O
on	O
personal	B-Device
computers	I-Device
.	O
</s>
<s>
It	O
is	O
Intusoft	O
's	O
fourth	O
generation	O
analog	O
and	O
mixed	O
signal	O
circuit	B-Language
simulation	I-Language
package	O
and	O
is	O
used	O
in	O
electronic	O
design	O
automation	O
.	O
</s>
<s>
All	O
of	O
the	O
ICAP/4	B-Algorithm
products	O
incorporate	O
the	O
Intusoft	O
IsSpice4	O
simulation	O
engine	O
,	O
which	O
is	O
based	O
on	O
Berkeley	O
SPICE	B-Protocol
3	O
analog	O
simulation	O
with	O
the	O
Georgia	O
Tech	O
XSPICE	O
event	O
simulator	O
model	O
.	O
</s>
<s>
The	O
original	O
IsSpice	O
simulator	O
was	O
created	O
in	O
1985	O
,	O
however	O
the	O
current	O
version	O
offers	O
many	O
distinct	O
advantages	O
over	O
its	O
Berkeley	O
SPICE	B-Protocol
predecessor	O
.	O
</s>
