<s>
In	O
digital	O
logic	O
applications	O
,	O
bit-serial	B-General_Concept
architectures	I-General_Concept
send	O
data	O
one	O
bit	O
at	O
a	O
time	O
,	O
along	O
a	O
single	O
wire	O
,	O
in	O
contrast	O
to	O
bit-parallel	O
word	O
architectures	O
,	O
in	O
which	O
data	O
values	O
are	O
sent	O
all	O
bits	O
or	O
a	O
word	O
at	O
once	O
along	O
a	O
group	O
of	O
wires	O
.	O
</s>
<s>
All	O
digital	O
computers	O
built	O
before	O
1951	O
,	O
and	O
most	O
of	O
the	O
early	O
massive	B-Operating_System
parallel	I-Operating_System
processing	I-Operating_System
machines	O
used	O
a	O
bit-serial	B-General_Concept
architecture	I-General_Concept
—	O
they	O
were	O
serial	B-Device
computers	I-Device
.	O
</s>
<s>
Bit-serial	B-General_Concept
architectures	I-General_Concept
were	O
developed	O
for	O
digital	B-General_Concept
signal	I-General_Concept
processing	I-General_Concept
in	O
the	O
1960s	O
through	O
1980s	O
,	O
including	O
efficient	O
structures	O
for	O
bit-serial	B-General_Concept
multiplication	O
and	O
accumulation	O
.	O
</s>
<s>
Often	O
,	O
N	O
serial	B-General_Concept
processors	I-General_Concept
will	O
take	O
less	O
FPGA	B-Architecture
area	O
and	O
have	O
a	O
higher	O
total	O
performance	O
than	O
a	O
single	O
N-bit	O
parallel	O
processor	O
.	O
</s>
