<s>
The	O
Europe	B-Architecture
Card	I-Architecture
Bus	I-Architecture
(	O
ECB	O
or	O
ECB-bus	O
)	O
is	O
a	O
computer	O
bus	O
developed	O
in	O
1977	O
by	O
the	O
company	O
Kontron	O
,	O
mainly	O
for	O
the	O
8-bit	O
Zilog	B-General_Concept
Z80	I-General_Concept
,	O
Intel	B-General_Concept
8080	I-General_Concept
and	O
Intel	B-General_Concept
8085	I-General_Concept
microprocessor	B-Architecture
families	O
.	O
</s>
<s>
Mechanically	O
,	O
the	O
ECB	O
is	O
usually	O
implemented	O
as	O
a	O
backplane	B-Architecture
circuit	O
board	O
installed	O
in	O
a	O
19-inch	B-Application
rack	I-Application
chassis	O
.	O
</s>
<s>
Backplane	B-Architecture
can	O
have	O
up	O
to	O
?	O
</s>
<s>
N8VEM	B-Device
homebrew	O
computing	O
project	O
uses	O
ECB	O
and	O
provides	O
a	O
large	O
number	O
of	O
various	O
ECB	O
cards	O
and	O
a	O
couple	O
of	O
ECB	O
backplanes	B-Architecture
along	O
with	O
Z80	B-General_Concept
processor	O
socket	O
shim	O
adapters	O
to	O
allow	O
a	O
great	O
number	O
of	O
retro-computers	O
access	O
to	O
the	O
ECB	O
bus	O
without	O
the	O
need	O
for	O
major	O
system	O
modification	O
.	O
</s>
