<s>
Human	O
–	O
Computer	O
Interaction	O
(	O
HCI	O
)	O
–	O
the	O
intersection	O
of	O
computer	B-General_Concept
science	I-General_Concept
and	O
behavioral	O
sciences	O
—	O
this	O
field	O
involves	O
the	O
study	O
,	O
planning	O
,	O
and	O
design	O
of	O
the	O
interaction	O
between	O
people	O
(	O
users	O
)	O
and	O
computers	O
.	O
</s>
<s>
Attention	O
to	O
human-machine	O
interaction	O
is	O
important	O
,	O
because	O
poorly	O
designed	O
human-machine	B-Application
interfaces	I-Application
can	O
lead	O
to	O
many	O
unexpected	O
problems	O
.	O
</s>
<s>
A	O
classic	O
example	O
of	O
this	O
is	O
the	O
Three	O
Mile	O
Island	O
accident	O
where	O
investigations	O
concluded	O
that	O
the	O
design	O
of	O
the	O
human-machine	B-Application
interface	I-Application
was	O
at	O
least	O
partially	O
responsible	O
for	O
the	O
disaster	O
.	O
</s>
<s>
A	O
field	O
of	O
computer	B-General_Concept
science	I-General_Concept
–	O
scientific	O
and	O
practical	O
approach	O
to	O
computation	O
and	O
its	O
applications	O
.	O
</s>
<s>
A	O
subfield	O
of	O
computer	B-General_Concept
programming	I-General_Concept
–	O
process	O
of	O
designing	O
,	O
writing	O
,	O
testing	O
,	O
debugging	O
,	O
and	O
maintaining	O
the	O
source	O
code	O
of	O
computer	O
programs	O
.	O
</s>
<s>
A	O
type	O
of	O
technology	O
–	O
making	O
,	O
modification	O
,	O
usage	O
,	O
and	O
knowledge	O
of	O
tools	O
,	O
machines	O
,	O
techniques	O
,	O
crafts	O
,	O
systems	O
,	O
methods	O
of	O
organization	O
,	O
to	O
solve	O
a	O
problem	O
,	O
improve	O
a	O
preexisting	O
solution	O
to	O
a	O
problem	O
,	O
achieve	O
a	O
goal	O
,	O
handle	O
an	O
applied	O
input/output	B-General_Concept
relation	O
or	O
perform	O
a	O
specific	O
function	O
.	O
</s>
<s>
Visual	B-Language
programming	I-Language
languages	I-Language
.	O
</s>
<s>
Hardware	B-Architecture
input/output	B-General_Concept
devices	I-General_Concept
and	O
peripherals	O
:	O
</s>
<s>
Motion	O
pictures	O
featuring	O
interesting	O
user	B-Application
interfaces	I-Application
:	O
</s>
