<s>
The	O
Educator	B-Device
64	I-Device
,	O
also	O
known	O
as	O
the	O
PET	O
64	O
and	O
Model	O
4064	O
,	O
was	O
a	O
microcomputer	B-Architecture
made	O
by	O
Commodore	O
Business	O
Machines	O
in	O
1983	O
.	O
</s>
<s>
It	O
was	O
sold	O
to	O
schools	O
as	O
a	O
replacement	O
for	O
aging	O
Commodore	B-Device
PET	I-Device
systems	O
.	O
</s>
<s>
The	O
internals	O
of	O
the	O
Educator	B-Device
64	I-Device
were	O
refurbished	O
Commodore	O
64	O
motherboards	O
and	O
monochromatic	O
green	O
monitors	O
.	O
</s>
<s>
The	O
area	O
above	O
the	O
keyboard	O
contained	O
a	O
quick	O
reference	O
card	O
for	O
BASIC	B-Language
2.0	I-Language
and	O
Commodore	B-Device
DOS	I-Device
commands	O
.	O
</s>
<s>
The	O
only	O
differences	O
between	O
the	O
Educator	B-Device
64	I-Device
and	O
the	O
other	O
64	O
models	O
were	O
the	O
graphics	O
capabilities	O
,	O
the	O
built-in	O
speaker	O
,	O
the	O
sound	O
amplifier	O
with	O
volume	O
control	O
,	O
the	O
3.5	O
mm	O
mini-jack	O
for	O
mono	O
sound	O
output	O
to	O
headphones	O
,	O
the	O
internal	O
power	O
supply	O
,	O
and	O
the	O
keyboard	O
which	O
is	O
missing	O
the	O
color	O
abbreviations	O
imprinted	O
on	O
the	O
front	O
edge	O
of	O
the	O
number	O
keys	O
.	O
</s>
<s>
The	O
Educator	B-Device
64	I-Device
retained	O
the	O
ability	O
to	O
display	O
shades	O
of	O
green	O
,	O
while	O
the	O
PET	O
64	O
and	O
4064	O
were	O
monochrome-only	O
.	O
</s>
<s>
Though	O
the	O
PET	O
4008/4016/4032	O
computers	O
had	O
cases	O
made	O
entirely	O
of	O
metal	O
,	O
only	O
the	O
Educator	B-Device
64	I-Device
's	O
base	O
was	O
metalthe	O
upper	O
case	O
was	O
made	O
of	O
thick	O
plastic	O
.	O
</s>
<s>
The	O
Educator	B-Device
64	I-Device
was	O
not	O
sold	O
in	O
great	O
numbers	O
.	O
</s>
<s>
It	O
suffered	O
from	O
its	O
monochrome	B-Device
display	I-Device
most	O
Commodore	O
64	O
software	O
assumed	O
the	O
availability	O
of	O
color	O
.	O
</s>
<s>
And	O
,	O
by	O
that	O
time	O
,	O
the	O
US	O
education	O
market	O
was	O
firmly	O
in	O
Apple	B-Device
's	O
grasp	O
.	O
</s>
