<s>
The	O
educational	O
computer	O
LC80	B-Device
was	O
a	O
single-board	B-Device
computer	I-Device
manufactured	O
in	O
the	O
German	O
Democratic	O
Republic	O
(	O
GDR	O
)	O
and	O
intended	O
for	O
teaching	O
purposes	O
.	O
</s>
<s>
Early	O
in	O
1985	O
the	O
LC80	B-Device
was	O
on	O
the	O
market	O
,	O
making	O
it	O
the	O
first	O
computer	O
available	O
to	O
retail	O
customers	O
in	O
the	O
GDR	O
.	O
</s>
<s>
The	O
computers	O
Z	B-Device
9001	I-Device
and	O
HC	B-Device
900	I-Device
that	O
had	O
been	O
shown	O
at	O
the	O
same	O
spring	O
fair	O
,	O
could	O
not	O
be	O
manufactured	O
in	O
sufficient	O
quantity	O
and	O
were	O
thus	O
available	O
only	O
to	O
educational	O
institutions	O
.	O
</s>
<s>
The	O
LC80	B-Device
was	O
programmed	O
by	O
entering	O
hexadecimal	O
machine	B-Language
codes	I-Language
via	O
a	O
built-in	O
25-key	O
calculator	B-Application
keyboard	O
(	O
16	O
hexadecimal	O
keys	O
,	O
7	O
function	O
keys	O
,	O
NMI	B-General_Concept
,	O
Reset	B-General_Concept
)	O
.	O
</s>
<s>
Programs	O
could	O
be	O
saved	O
and	O
loaded	O
via	O
cassette	B-Device
tape	I-Device
or	O
EPROM	B-General_Concept
.	O
</s>
<s>
This	O
version	O
differed	O
from	O
the	O
conventional	O
LC80	B-Device
in	O
the	O
following	O
details	O
:	O
</s>
<s>
The	O
manufacturer	O
published	O
a	O
series	O
of	O
three	O
booklets	O
that	O
contained	O
software	O
as	O
hexadecimal	O
machine	B-Language
code	I-Language
listings	O
.	O
</s>
<s>
Software	O
and	O
applications	O
were	O
published	O
in	O
journals	O
such	O
as	O
Funkamateur	O
(	O
Morse	O
code	O
trainer	O
)	O
and	O
Radio	O
Fernsehen	O
Elektronik	O
(	O
EPROM	B-General_Concept
programmer	I-General_Concept
,	O
robot	O
model	O
control	O
)	O
.	O
</s>
<s>
Given	O
the	O
limited	O
availability	O
of	O
computers	O
in	O
East	O
Germany	O
,	O
the	O
LC80	B-Device
was	O
even	O
used	O
to	O
control	O
scales	O
underground	O
in	O
a	O
potash	O
mine	O
.	O
</s>
