<s>
Percom	B-Device
Data	I-Device
Corporation	O
was	O
an	O
early	O
microcomputer	B-Architecture
company	O
formed	O
in	O
1976	O
to	O
sell	O
peripherals	O
into	O
the	O
emerging	O
microcomputer	B-Architecture
market	O
.	O
</s>
<s>
They	O
are	O
best	O
known	O
for	O
their	O
floppy	B-Device
disk	I-Device
systems	O
,	O
first	O
for	O
S-100	O
machines	O
,	O
and	O
the	O
later	O
for	O
other	O
platforms	O
like	O
the	O
TRS-80	B-Device
and	I-Device
the	I-Device
Atari	B-Device
8-bit	I-Device
family	I-Device
.	O
</s>
<s>
The	O
company	O
was	O
purchased	O
by	O
Esprit	B-General_Concept
Systems	I-General_Concept
in	O
1984	O
.	O
</s>
<s>
Percom	B-Device
started	O
after	O
the	O
meeting	O
that	O
produced	O
the	O
Kansas	B-Device
City	I-Device
standard	I-Device
for	O
storing	O
data	O
on	O
cassette	B-Device
tapes	I-Device
.	O
</s>
<s>
Mauch	O
and	O
his	O
wife	O
Lucy	O
started	O
what	O
was	O
originally	O
PerCom	B-Device
Data	I-Device
that	O
same	O
month	O
,	O
selling	O
the	O
CIS-30	O
adaptor	O
allowing	O
any	O
portable	O
cassette	O
player	O
to	O
be	O
connected	O
to	O
the	O
Motorola	O
6800-based	O
micros	O
from	O
SWTPC	O
.	O
</s>
<s>
Floppy	B-Device
disk	I-Device
drives	I-Device
followed	O
,	O
along	O
with	O
rapid	O
growth	O
.	O
</s>
<s>
Percom	B-Device
incorporated	O
(	O
dropping	O
the	O
capital	O
C	O
in	O
the	O
name	O
)	O
in	O
1978	O
.	O
</s>
<s>
In	O
1979	O
the	O
company	O
branched	O
out	O
into	O
the	O
TRS-80	B-Device
market	O
,	O
starting	O
with	O
the	O
Percom	B-Device
Separator	O
,	O
and	O
add-on	O
device	O
that	O
corrected	O
deficiencies	O
in	O
Radio	O
Shack	O
's	O
own	O
floppy	B-Device
disk	I-Device
interface	O
.	O
</s>
<s>
In	O
1980	O
they	O
introduced	O
the	O
Percom	B-Device
Doubler	O
,	O
the	O
first	O
double-density	O
floppy	B-Device
disk	I-Device
for	O
the	O
TRS-80	B-Device
platform	O
.	O
</s>
<s>
They	O
later	O
introduced	O
Electric	O
Crayon	O
,	O
a	O
color	O
graphics	O
system	O
that	O
communicated	O
with	O
the	O
TRS-80	B-Device
through	O
the	O
printer	O
port	O
and	O
output	O
to	O
a	O
separate	O
composite	O
monitor	O
or	O
color	O
television	O
.	O
</s>
<s>
Percom	B-Device
introduced	O
a	O
drive	O
for	O
the	O
Atari	B-Device
8-bit	I-Device
family	I-Device
in	O
1982	O
.	O
</s>
<s>
In	O
contrast	O
to	O
the	O
Atari	B-Device
810	I-Device
,	O
the	O
only	O
drive	O
on	O
the	O
platform	O
at	O
that	O
time	O
,	O
the	O
RFD40	O
drive	O
offered	O
double-density	O
formatting	O
and	O
higher	O
performance	O
.	O
</s>
<s>
The	O
system	O
did	O
not	O
ship	O
with	O
a	O
compatible	O
DOS	O
,	O
instead	O
,	O
it	O
shipped	O
with	O
a	O
utility	O
that	O
modified	O
an	O
existing	O
copy	O
of	O
Atari	B-Operating_System
DOS	I-Operating_System
to	O
add	O
double-density	O
support	O
.	O
</s>
<s>
This	O
resulted	O
in	O
the	O
creation	O
of	O
the	O
Visionnet	O
,	O
an	O
early	O
Ethernet	O
card	O
for	O
the	O
IBM	B-Device
PC	I-Device
.	O
</s>
<s>
PerComNet	O
for	O
the	O
IBM	B-Device
PC	I-Device
was	O
licensed	O
by	O
Western	O
Digital	O
and	O
was	O
sold	O
under	O
the	O
name	O
PC-LAN	O
.	O
</s>
<s>
In	O
1984	O
,	O
Esprit	B-General_Concept
Systems	I-General_Concept
purchased	O
Percom	B-Device
and	O
folded	O
many	O
of	O
their	O
product	O
lines	O
.	O
</s>
