<s>
The	O
on-board	B-Device
data	I-Device
handling	I-Device
(	O
OBDH	O
)	O
subsystem	O
of	O
a	O
spacecraft	O
is	O
the	O
subsystem	O
which	O
carries	O
and	O
stores	O
data	O
between	O
the	O
various	O
electronics	O
units	O
and	O
the	O
ground	O
segment	O
,	O
via	O
the	O
telemetry	O
,	O
tracking	O
and	O
command	O
(	O
TT&C	O
)	O
subsystem	O
.	O
</s>
