<s>
A	O
memistor	B-General_Concept
is	O
a	O
nanoelectric	O
circuitry	O
element	O
used	O
in	O
parallel	O
computing	O
memory	O
technology	O
.	O
</s>
<s>
While	O
the	O
memristor	O
is	O
defined	O
in	O
terms	O
of	O
a	O
two-terminal	O
circuit	O
element	O
,	O
there	O
was	O
an	O
implementation	O
of	O
a	O
three-terminal	O
device	O
called	O
a	O
memistor	B-General_Concept
developed	O
by	O
Bernard	O
Widrow	O
in	O
1960	O
.	O
</s>
<s>
Memistors	B-General_Concept
formed	O
basic	O
components	O
of	O
a	O
neural	O
network	O
architecture	O
called	O
ADALINE	B-Algorithm
developed	O
by	O
Widrow	O
.	O
</s>
<s>
The	O
memistor	B-General_Concept
was	O
also	O
used	O
in	O
MADALINE	O
.	O
</s>
<s>
In	O
one	O
of	O
the	O
technical	O
reports	O
the	O
memistor	B-General_Concept
was	O
described	O
as	O
follows	O
:	O
</s>
<s>
Since	O
the	O
conductance	O
was	O
described	O
as	O
being	O
controlled	O
by	O
the	O
time	O
integral	O
of	O
current	O
as	O
in	O
Chua	O
's	O
theory	O
of	O
the	O
memristor	O
,	O
the	O
memistor	B-General_Concept
of	O
Widrow	O
may	O
be	O
considered	O
as	O
a	O
form	O
of	O
memristor	O
having	O
three	O
instead	O
of	O
two	O
terminals	O
.	O
</s>
<s>
However	O
,	O
one	O
of	O
the	O
main	O
limitations	O
of	O
Widrow	O
's	O
memistors	B-General_Concept
was	O
that	O
they	O
were	O
made	O
from	O
an	O
electroplating	O
cell	O
rather	O
than	O
as	O
a	O
solid-state	O
circuit	O
element	O
.	O
</s>
<s>
Solid-state	O
circuit	O
elements	O
were	O
required	O
to	O
achieve	O
the	O
scalability	O
of	O
the	O
integrated	O
circuit	O
which	O
was	O
gaining	O
popularity	O
around	O
the	O
same	O
time	O
as	O
the	O
invention	O
of	O
Widrow	O
's	O
memistor	B-General_Concept
.	O
</s>
<s>
An	O
article	O
on	O
ArXiv	O
suggests	O
that	O
the	O
floating-gate	B-Algorithm
MOSFET	I-Algorithm
as	O
well	O
as	O
other	O
3-terminal	O
"	O
memory	O
transistors	O
"	O
may	O
be	O
modeled	O
using	O
dynamical	O
systems	O
equations	O
in	O
a	O
similar	O
fashion	O
to	O
the	O
memristive	O
systems	O
of	O
memristors	O
.	O
</s>
