<s>
An	O
electronic	B-Device
organizer	I-Device
(	O
or	O
electric	O
organizer	O
)	O
is	O
a	O
small	O
calculator-sized	O
computer	O
,	O
often	O
with	O
an	O
built-in	O
diary	O
application	O
and	O
other	O
functions	O
such	O
as	O
an	O
address	O
book	O
and	O
calendar	O
,	O
replacing	O
paper-based	O
personal	O
organizers	O
.	O
</s>
<s>
Typically	O
,	O
it	O
has	O
a	O
small	O
alphanumeric	O
keypad	O
and	O
an	O
LCD	B-Device
screen	I-Device
of	O
one	O
,	O
two	O
,	O
or	O
three	O
lines	O
.	O
</s>
<s>
They	O
were	O
very	O
popular	O
especially	O
with	O
businessmen	O
during	O
the	O
1990s	O
,	O
but	O
because	O
of	O
the	O
advent	O
of	O
palmtop	B-Device
PCs	I-Device
in	O
the	O
1990s	O
,	O
personal	B-Application
digital	I-Application
assistants	I-Application
in	O
the	O
2000s	O
,	O
and	O
smartphones	B-Application
in	O
the	O
2010s	O
,	O
all	O
of	O
which	O
have	O
a	O
larger	O
set	O
of	O
features	O
,	O
electronic	B-Device
organizers	I-Device
are	O
mostly	O
seen	O
today	O
for	O
research	O
purposes	O
.	O
</s>
<s>
Electronic	B-Device
organizers	I-Device
have	O
more	O
recently	O
been	O
used	O
to	O
support	O
people	O
with	O
Alzheimer	O
's	O
disease	O
to	O
have	O
a	O
visual	O
representation	O
of	O
a	O
schedule	O
.	O
</s>
<s>
Casio	B-Device
digital	I-Device
diaries	I-Device
were	O
produced	O
by	O
Casio	O
in	O
the	O
early	O
and	O
mid	O
1990s	O
,	O
but	O
have	O
since	O
been	O
entirely	O
superseded	O
by	O
Mobile	O
Phones	O
and	O
PDAs	B-Application
.	O
</s>
<s>
While	O
Casio	O
was	O
a	O
major	O
role	O
player	O
in	O
the	O
field	O
of	O
electronic	B-Device
organizers	I-Device
there	O
were	O
many	O
different	O
ideas	O
,	O
patent	O
requests	O
,	O
and	O
manufacturers	O
of	O
electronic	B-Device
organizers	I-Device
.	O
</s>
<s>
Rolodex	O
,	O
widely	O
known	O
for	O
their	O
index	O
card	O
holders	O
in	O
the	O
1980s	O
,	O
Sharp	O
Electronics	O
,	O
mostly	O
known	O
for	O
their	O
printers	O
and	O
audio	O
visual	O
equipment	O
,	O
and	O
lastly	O
Royal	O
electronics	O
were	O
all	O
large	O
contributors	O
to	O
the	O
electronic	B-Device
organizer	I-Device
in	O
its	O
heyday	O
.	O
</s>
