<s>
NL5	O
is	O
a	O
mixed-signal	O
electronic	B-Language
circuit	I-Language
simulator	I-Language
with	O
ideal	O
and	O
piecewise-linear	O
components	O
.	O
</s>
<s>
In	O
early	O
1990s	O
,	O
NL	O
migrated	O
to	O
MS-DOS	B-Application
and	O
Windows	O
based	O
personal	O
computers	O
.	O
</s>
<s>
For	O
many	O
years	O
it	O
was	O
a	O
proprietary	B-Application
tool	O
of	O
a	O
few	O
research	O
labs	O
and	O
small	O
companies	O
,	O
used	O
to	O
design	O
control	O
systems	O
,	O
measurement	O
equipment	O
,	O
and	O
power	O
supplies	O
.	O
</s>
<s>
NL5	O
performs	O
transient	O
simulation	O
using	O
modified	O
nodal	O
analysis	O
and	O
trapezoidal	B-Algorithm
integration	I-Algorithm
.	O
</s>
<s>
It	O
can	O
be	O
used	O
as	O
an	O
analog	O
simulation	O
engine	O
for	O
co-simulation	O
with	O
System	B-Language
Verilog	I-Language
digital	O
simulators	O
(	O
e.g.	O
</s>
<s>
Xilinx	B-Algorithm
Vivado	I-Algorithm
)	O
.	O
</s>
<s>
Also	O
,	O
NL5	O
DLL	O
functions	O
can	O
be	O
called	O
from	O
C/C	O
++	O
applications	O
,	O
MATLAB	B-Language
,	O
Python	B-Language
,	O
etc.	O
,	O
and	O
perform	O
co-simulation	O
with	O
user	O
's	O
tool	O
of	O
choice	O
.	O
</s>
