<s>
The	O
PMI-80	B-Device
was	O
a	O
single-board	B-Device
microcomputer	B-Architecture
produced	O
by	O
Tesla	O
Piešťany	O
,	O
Czechoslovakia	O
,	O
since	O
1982	O
.	O
</s>
<s>
It	O
was	O
based	O
on	O
the	O
MHB	B-General_Concept
8080A	I-General_Concept
CPU	B-General_Concept
(	O
a	O
Tesla	O
clone	O
of	O
the	O
Intel	B-General_Concept
8080	I-General_Concept
)	O
,	O
clocked	O
at	O
1.111	O
MHz	O
.	O
</s>
<s>
Instead	O
of	O
a	O
raster	B-Device
graphic	I-Device
display	I-Device
output	O
and	O
classical	B-Device
keyboard	I-Device
,	O
it	O
had	O
a	O
calculator-style	O
nine-digit	O
seven-segment	B-General_Concept
red	O
LED	O
display	O
and	O
a	O
25-key	O
calculator-type	O
keypad	O
with	O
hexadecimal	O
and	O
function	O
keys	O
(	O
including	O
hardware	O
REset	B-General_Concept
and	O
Interrupt	B-Application
)	O
.	O
</s>
<s>
The	O
PMI-80	B-Device
had	O
1KiB	O
of	O
ROM	B-Device
(	O
expandable	O
to	O
2KiB	O
)	O
and	O
fixed	O
1KiB	O
of	O
RWM	B-General_Concept
.	O
</s>
<s>
Eight	O
(	O
expandable	O
to	O
32	O
)	O
I/O	B-General_Concept
lines	O
were	O
provided	O
for	O
user	O
along	O
with	O
complete	O
system	O
bus	O
.	O
</s>
