<s>
The	O
Apple	B-Device
III	I-Device
(	O
styled	O
as	O
apple	B-Device
///	I-Device
)	O
is	O
a	O
business-oriented	O
personal	O
computer	O
produced	O
by	O
Apple	O
Computer	O
and	O
released	O
in	O
1980	O
.	O
</s>
<s>
Running	O
the	O
Apple	B-Operating_System
SOS	I-Operating_System
operating	B-General_Concept
system	I-General_Concept
,	O
it	O
was	O
intended	O
as	O
the	O
successor	O
to	O
the	O
Apple	B-Device
II	I-Device
series	I-Device
,	O
but	O
was	O
largely	O
considered	O
a	O
failure	O
in	O
the	O
market	O
.	O
</s>
<s>
It	O
was	O
designed	O
to	O
provide	O
key	O
features	O
business	O
users	O
wanted	O
in	O
a	O
personal	O
computer	O
:	O
a	O
true	O
typewriter-style	O
upper/lowercase	O
keyboard	O
(	O
the	O
Apple	B-Device
II	I-Device
only	O
supported	O
uppercase	O
)	O
and	O
an	O
80-column	O
display	O
.	O
</s>
<s>
Work	O
on	O
the	O
Apple	B-Device
III	I-Device
started	O
in	O
late	O
1978	O
under	O
the	O
guidance	O
of	O
Dr.	O
Wendell	O
Sander	O
.	O
</s>
<s>
The	O
Apple	B-Device
III	I-Device
was	O
formally	O
reintroduced	O
on	O
November	O
9	O
,	O
1981	O
.	O
</s>
<s>
Development	O
stopped	O
,	O
and	O
the	O
Apple	B-Device
III	I-Device
was	O
discontinued	O
on	O
April	O
24	O
,	O
1984	O
.	O
</s>
<s>
An	O
estimated	O
65,000	O
–	O
75,000	O
Apple	B-Device
III	I-Device
computers	O
were	O
sold	O
.	O
</s>
<s>
The	O
Apple	B-Device
III	I-Device
Plus	O
brought	O
this	O
up	O
to	O
approximately	O
120,000	O
.	O
</s>
<s>
Apple	O
co-founder	O
Steve	O
Wozniak	O
stated	O
that	O
the	O
primary	O
reason	O
for	O
the	O
Apple	B-Device
III	I-Device
's	O
failure	O
was	O
that	O
the	O
system	O
was	O
designed	O
by	O
Apple	O
's	O
marketing	O
department	O
,	O
unlike	O
Apple	O
's	O
previous	O
engineering-driven	O
projects	O
.	O
</s>
<s>
The	O
Apple	B-Device
III	I-Device
's	O
failure	O
led	O
Apple	O
to	O
reevaluate	O
its	O
plan	O
to	O
phase	O
out	O
the	O
Apple	B-Device
II	I-Device
,	O
prompting	O
the	O
eventual	O
continuation	O
of	O
development	O
of	O
the	O
older	O
machine	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
later	O
Apple	B-Device
II	I-Device
models	O
incorporated	O
some	O
hardware	O
and	O
software	O
technologies	O
of	O
the	O
Apple	B-Device
III	I-Device
.	O
</s>
<s>
Steve	O
Wozniak	O
and	O
Steve	O
Jobs	O
expected	O
hobbyists	O
to	O
purchase	O
the	O
Apple	B-Device
II	I-Device
,	O
but	O
because	O
of	O
VisiCalc	B-Application
and	O
Disk	B-Device
II	I-Device
,	O
small	O
businesses	O
purchased	O
90%	O
of	O
the	O
computers	O
.	O
</s>
<s>
The	O
Apple	B-Device
III	I-Device
was	O
designed	O
to	O
be	O
a	O
business	O
computer	O
and	O
successor	O
.	O
</s>
<s>
Though	O
the	O
Apple	B-Device
II	I-Device
contributed	O
to	O
the	O
inspirations	O
of	O
several	O
important	O
business	O
products	O
,	O
such	O
as	O
VisiCalc	B-Application
,	O
Multiplan	B-Device
,	O
and	O
Apple	B-Device
Writer	I-Device
,	O
the	O
computer	O
's	O
hardware	O
architecture	O
,	O
operating	B-General_Concept
system	I-General_Concept
,	O
and	O
developer	O
environment	O
are	O
limited	O
.	O
</s>
<s>
Apple	O
management	O
intended	O
to	O
clearly	O
establish	O
market	O
segmentation	O
by	O
designing	O
the	O
Apple	B-Device
III	I-Device
to	O
appeal	O
to	O
the	O
90%	O
business	O
market	O
,	O
leaving	O
the	O
Apple	B-Device
II	I-Device
to	O
home	O
and	O
education	O
users	O
.	O
</s>
<s>
Management	O
believed	O
that	O
"	O
once	O
the	O
Apple	B-Device
III	I-Device
was	O
out	O
,	O
the	O
Apple	B-Device
II	I-Device
would	O
stop	O
selling	O
in	O
six	O
months	O
"	O
,	O
Wozniak	O
said	O
.	O
</s>
<s>
The	O
Apple	B-Device
III	I-Device
is	O
powered	O
by	O
a	O
1.8-megahertz	O
Synertek	O
6502A	B-General_Concept
or	O
B	O
8-bit	O
CPU	B-General_Concept
and	O
,	O
like	O
some	O
of	O
the	O
later	O
machines	O
in	O
the	O
Apple	B-Device
II	I-Device
family	I-Device
,	O
uses	O
bank	B-General_Concept
switching	I-General_Concept
techniques	O
to	O
address	O
memory	O
beyond	O
the	O
6502	B-General_Concept
's	O
traditional	O
64KB	O
limit	O
,	O
up	O
to	O
256KB	O
in	O
the	O
III	O
's	O
case	O
.	O
</s>
<s>
Third-party	O
vendors	O
produced	O
memory	O
upgrade	O
kits	O
that	O
allow	O
the	O
Apple	B-Device
III	I-Device
to	O
reach	O
up	O
to	O
512KB	O
of	O
random-access	O
memory	O
(	O
RAM	O
)	O
.	O
</s>
<s>
Other	O
Apple	B-Device
III	I-Device
built-in	O
features	O
include	O
an	O
80-column	O
,	O
24-line	O
display	O
with	O
upper	O
and	O
lowercase	O
characters	O
,	O
a	O
numeric	O
keypad	O
,	O
dual-speed	O
(	O
pressure-sensitive	O
)	O
cursor	O
control	O
keys	O
,	O
6-bit	O
(	O
DAC	O
)	O
audio	O
,	O
and	O
a	O
built-in	O
140-kilobyte	O
5.25-inch	O
floppy	B-Device
disk	I-Device
drive	I-Device
.	O
</s>
<s>
Unlike	O
the	O
Apple	B-Device
II	I-Device
,	O
the	O
Disk	B-Device
III	O
controller	O
is	O
part	O
of	O
the	O
logic	O
board	O
.	O
</s>
<s>
The	O
Apple	B-Device
III	I-Device
is	O
the	O
first	O
Apple	O
product	O
to	O
allow	O
the	O
user	O
to	O
choose	O
both	O
a	O
screen	O
font	O
and	O
a	O
keyboard	O
layout	O
:	O
either	O
QWERTY	O
or	O
Dvorak	O
.	O
</s>
<s>
The	O
Apple	B-Device
III	I-Device
introduced	O
an	O
advanced	O
operating	B-General_Concept
system	I-General_Concept
called	O
Apple	B-Operating_System
SOS	I-Operating_System
,	O
pronounced	O
"	O
apple	O
sauce	O
"	O
.	O
</s>
<s>
Its	O
ability	O
to	O
address	O
resources	O
by	O
name	O
allows	O
the	O
Apple	B-Device
III	I-Device
to	O
be	O
more	O
scalable	O
than	O
the	O
Apple	B-Device
II	I-Device
's	O
addressing	O
by	O
physical	O
location	O
such	O
as	O
PR	O
#6	O
,	O
CATALOG	O
,	O
D1	O
.	O
</s>
<s>
Apple	B-Operating_System
SOS	I-Operating_System
allows	O
the	O
full	O
capacity	O
of	O
a	O
storage	O
device	O
to	O
be	O
used	O
as	O
a	O
single	O
volume	O
,	O
such	O
as	O
the	O
Apple	B-Device
ProFile	I-Device
hard	O
disk	B-Device
drive	O
,	O
and	O
it	O
supports	O
a	O
hierarchical	B-Application
file	I-Application
system	I-Application
.	O
</s>
<s>
Some	O
of	O
the	O
features	O
and	O
code	O
base	O
of	O
Apple	B-Operating_System
SOS	I-Operating_System
were	O
later	O
adopted	O
into	O
the	O
Apple	B-Device
II	I-Device
's	O
ProDOS	B-Operating_System
and	O
GS/OS	B-Application
operating	B-General_Concept
systems	I-General_Concept
,	O
as	O
well	O
as	O
Lisa	B-Device
7/7	I-Device
and	O
Macintosh	B-Device
system	I-Device
software	I-Device
.	O
</s>
<s>
With	O
a	O
starting	O
price	O
between	O
,	O
the	O
Apple	B-Device
III	I-Device
was	O
more	O
expensive	O
than	O
many	O
of	O
the	O
CP/M	B-Application
-based	O
business	O
computers	O
that	O
were	O
available	O
at	O
the	O
time	O
.	O
</s>
<s>
Few	O
software	O
applications	O
other	O
than	O
VisiCalc	B-Application
are	O
available	O
for	O
the	O
computer	O
;	O
according	O
to	O
a	O
presentation	O
at	O
KansasFest	O
2012	O
,	O
fewer	O
than	O
50	O
Apple	O
III-specific	O
software	O
packages	O
were	O
ever	O
published	O
,	O
most	O
shipping	O
when	O
the	O
III	O
Plus	O
was	O
released	O
.	O
</s>
<s>
Because	O
Apple	O
did	O
not	O
view	O
the	O
Apple	B-Device
III	I-Device
as	O
suitable	O
for	O
hobbyists	O
,	O
it	O
did	O
not	O
provide	O
much	O
of	O
the	O
technical	O
software	O
information	O
that	O
accompanies	O
the	O
Apple	B-Device
II	I-Device
.	O
</s>
<s>
Originally	O
intended	O
as	O
a	O
direct	O
replacement	O
to	O
the	O
Apple	B-Device
II	I-Device
series	I-Device
,	O
it	O
was	O
designed	O
to	O
be	O
backward	B-General_Concept
compatible	I-General_Concept
with	O
Apple	B-Device
II	I-Device
software	O
.	O
</s>
<s>
However	O
,	O
since	O
Apple	O
did	O
not	O
want	O
to	O
encourage	O
continued	O
development	O
of	O
the	O
II	O
platform	O
,	O
Apple	B-Device
II	I-Device
compatibility	O
exists	O
only	O
in	O
a	O
special	O
Apple	B-Device
II	I-Device
Mode	O
which	O
is	O
limited	O
in	O
its	O
capabilities	O
to	O
the	O
emulation	O
of	O
a	O
basic	O
Apple	B-Device
II	I-Device
Plus	O
configuration	O
with	O
of	O
RAM	O
.	O
</s>
<s>
Special	O
chips	O
were	O
intentionally	O
added	O
to	O
prevent	O
access	O
from	O
Apple	B-Device
II	I-Device
Mode	O
to	O
the	O
III	O
's	O
advanced	O
features	O
such	O
as	O
its	O
larger	O
amount	O
of	O
memory	O
.	O
</s>
<s>
The	O
Apple	B-Device
III	I-Device
has	O
four	O
expansion	O
slots	O
,	O
a	O
number	O
that	O
inCider	O
in	O
1986	O
called	O
"	O
miserly	O
"	O
.	O
</s>
<s>
Apple	B-Device
II	I-Device
cards	O
are	O
compatible	O
but	O
risk	O
violating	O
government	O
RFI	O
regulations	O
,	O
and	O
require	O
Apple	O
III-specific	O
device	O
drivers	O
;	O
BYTE	B-Application
stated	O
that	O
"	O
Apple	O
provides	O
virtually	O
no	O
information	O
on	O
how	O
to	O
write	O
them	O
"	O
.	O
</s>
<s>
As	O
with	O
software	O
,	O
Apple	O
provided	O
little	O
hardware	O
technical	O
information	O
with	O
the	O
computer	O
but	O
Apple	O
III-specific	O
products	O
became	O
available	O
,	O
such	O
as	O
one	O
that	O
made	O
the	O
computer	O
compatible	O
with	O
the	O
Apple	B-Device
IIe	I-Device
.	O
</s>
<s>
Several	O
new	O
Apple-produced	O
peripherals	O
were	O
developed	O
for	O
the	O
Apple	B-Device
III	I-Device
.	O
</s>
<s>
The	O
original	O
Apple	B-Device
III	I-Device
has	O
a	O
built-in	O
real-time	O
clock	O
,	O
which	O
is	O
recognized	O
by	O
Apple	B-Operating_System
SOS	I-Operating_System
.	O
</s>
<s>
Along	O
with	O
the	O
built-in	O
floppy	B-Device
drive	I-Device
,	O
the	O
Apple	B-Device
III	I-Device
can	O
also	O
handle	O
up	O
to	O
three	O
additional	O
external	O
Disk	B-Device
III	O
floppy	B-Device
disk	I-Device
drives	I-Device
.	O
</s>
<s>
The	O
Disk	B-Device
III	O
is	O
only	O
officially	O
compatible	O
with	O
the	O
Apple	B-Device
III	I-Device
.	O
</s>
<s>
The	O
Apple	B-Device
III	I-Device
Plus	O
requires	O
an	O
adaptor	O
from	O
Apple	O
to	O
use	O
the	O
Disk	B-Device
III	O
with	O
its	O
DB-25	O
disk	B-Device
port	O
.	O
</s>
<s>
With	O
the	O
introduction	O
of	O
the	O
revised	O
Apple	B-Device
III	I-Device
a	O
year	O
after	O
launch	O
,	O
Apple	O
began	O
offering	O
the	O
ProFile	B-Device
external	O
hard	O
disk	B-Device
system	O
.	O
</s>
<s>
The	O
Apple	B-Device
III	I-Device
has	O
the	O
built-in	O
hardware	O
capability	O
to	O
run	O
Apple	B-Device
II	I-Device
software	O
.	O
</s>
<s>
In	O
order	O
to	O
do	O
so	O
,	O
an	O
emulation	O
boot	O
disk	B-Device
is	O
required	O
that	O
functionally	O
turns	O
the	O
machine	O
into	O
a	O
standard	O
48-kilobyte	O
Apple	B-Device
II	I-Device
Plus	O
,	O
until	O
it	O
is	O
powered	O
off	O
.	O
</s>
<s>
The	O
keyboard	O
,	O
internal	O
floppy	B-Device
drive	I-Device
(	O
and	O
one	O
external	O
Disk	B-Device
III	O
)	O
,	O
display	O
(	O
color	O
is	O
provided	O
through	O
the	O
'	O
B/W	O
video	O
 '	O
port	O
)	O
and	O
speaker	O
all	O
act	O
as	O
Apple	B-Device
II	I-Device
peripherals	O
.	O
</s>
<s>
The	O
paddle	O
and	O
serial	O
ports	O
can	O
also	O
function	O
in	O
Apple	B-Device
II	I-Device
mode	O
,	O
however	O
with	O
some	O
limitations	O
and	O
compatibility	O
issues	O
.	O
</s>
<s>
Apple	O
engineers	O
added	O
specialized	O
circuitry	O
with	O
the	O
sole	O
purpose	O
of	O
blocking	O
access	O
to	O
its	O
advanced	O
features	O
when	O
running	O
in	O
Apple	B-Device
II	I-Device
emulation	O
mode	O
.	O
</s>
<s>
This	O
was	O
done	O
primarily	O
to	O
discourage	O
further	O
development	O
and	O
interest	O
in	O
the	O
Apple	B-Device
II	I-Device
line	O
,	O
and	O
to	O
push	O
the	O
Apple	B-Device
III	I-Device
as	O
its	O
successor	O
.	O
</s>
<s>
Many	O
Apple	B-Device
II	I-Device
programs	O
require	O
a	O
minimum	O
of	O
of	O
RAM	O
,	O
making	O
them	O
impossible	O
to	O
run	O
on	O
the	O
Apple	B-Device
III	I-Device
.	O
</s>
<s>
A	O
third-party	O
company	O
,	O
Titan	O
Technologies	O
,	O
sold	O
an	O
expansion	O
board	O
called	O
the	O
III	O
Plus	O
II	O
that	O
allows	O
Apple	B-Device
II	I-Device
mode	O
to	O
access	O
more	O
memory	O
,	O
a	O
standard	O
game	O
port	O
,	O
and	O
with	O
a	O
later	O
released	O
companion	O
card	O
,	O
even	O
emulate	O
the	O
Apple	B-Device
IIe	I-Device
.	O
</s>
<s>
Certain	O
Apple	B-Device
II	I-Device
slot	O
cards	O
can	O
be	O
installed	O
in	O
the	O
Apple	B-Device
III	I-Device
and	O
used	O
in	O
native	O
III-mode	O
with	O
custom	O
written	O
SOS	B-Operating_System
device	O
drivers	O
,	O
including	O
Grappler	O
Plus	O
and	O
Liron	O
3.5	O
Controller	O
.	O
</s>
<s>
The	O
14,000	O
units	O
of	O
the	O
original	O
Apple	B-Device
III	I-Device
sold	O
were	O
returned	O
and	O
replaced	O
with	O
the	O
entirely	O
new	O
revised	O
model	O
.	O
</s>
<s>
It	O
introduced	O
the	O
Apple	B-Device
III	I-Device
Plus	O
in	O
December	O
1983	O
at	O
a	O
price	O
of	O
US$	O
2,995	O
.	O
</s>
<s>
Owners	O
of	O
the	O
Apple	B-Device
III	I-Device
could	O
purchase	O
individual	O
III	O
Plus	O
upgrades	O
,	O
like	O
the	O
clock	O
and	O
interlacing	O
feature	O
,	O
and	O
obtain	O
the	O
newer	O
logic	O
board	O
as	O
a	O
service	O
replacement	O
.	O
</s>
<s>
A	O
keyboard	O
upgrade	O
kit	O
,	O
dubbed	O
"	O
Apple	B-Device
III	I-Device
Plus	O
upgrade	O
kit	O
"	O
was	O
also	O
made	O
available	O
–	O
which	O
included	O
the	O
keyboard	O
,	O
cover	O
,	O
keyboard	O
encoder	O
ROM	O
,	O
and	O
logo	O
replacements	O
.	O
</s>
<s>
According	O
to	O
Wozniak	O
,	O
the	O
Apple	B-Device
III	I-Device
"	O
had	O
100	O
percent	O
hardware	O
failures	O
"	O
.	O
</s>
<s>
Jobs	O
would	O
later	O
push	O
this	O
same	O
ideology	O
onto	O
almost	O
all	O
Apple	O
models	O
he	O
had	O
control	O
of	O
,	O
from	O
the	O
Apple	B-Device
Lisa	I-Device
and	O
Macintosh	B-Device
128K	I-Device
to	O
the	O
iMac	B-Device
.	O
</s>
<s>
To	O
allow	O
the	O
computer	O
to	O
dissipate	O
heat	O
,	O
the	O
base	O
of	O
the	O
Apple	B-Device
III	I-Device
was	O
made	O
of	O
heavy	O
cast	O
aluminum	O
,	O
which	O
supposedly	O
acts	O
as	O
a	O
heat	O
sink	O
.	O
</s>
<s>
One	O
advantage	O
to	O
the	O
aluminum	O
case	O
was	O
a	O
reduction	O
in	O
RFI	O
(	O
Radio	O
Frequency	O
Interference	O
)	O
,	O
a	O
problem	O
which	O
had	O
plagued	O
the	O
Apple	B-Device
II	I-Device
series	I-Device
throughout	O
its	O
history	O
.	O
</s>
<s>
Unlike	O
the	O
Apple	B-Device
II	I-Device
series	I-Device
,	O
the	O
power	O
supply	O
was	O
mounted	O
–	O
without	O
its	O
own	O
shell	O
–	O
in	O
a	O
compartment	O
separate	O
from	O
the	O
logic	O
board	O
.	O
</s>
<s>
The	O
decision	O
to	O
use	O
an	O
aluminum	O
shell	O
ultimately	O
led	O
to	O
engineering	O
issues	O
which	O
resulted	O
in	O
the	O
Apple	B-Device
III	I-Device
's	O
reliability	O
problems	O
.	O
</s>
<s>
Many	O
Apple	B-Device
IIIs	I-Device
were	O
thought	O
to	O
have	O
failed	O
due	O
to	O
their	O
inability	O
to	O
properly	O
dissipate	O
heat	O
.	O
</s>
<s>
inCider	O
stated	O
in	O
1986	O
that	O
"	O
Heat	O
has	O
always	O
been	O
a	O
formidable	O
enemy	O
of	O
the	O
Apple	B-Device
///	I-Device
"	O
,	O
and	O
some	O
users	O
reported	O
that	O
their	O
Apple	B-Device
IIIs	I-Device
became	O
so	O
hot	O
that	O
the	O
chips	O
started	O
dislodging	O
from	O
the	O
board	O
,	O
causing	O
the	O
screen	O
to	O
display	O
garbled	O
data	O
or	O
their	O
disk	B-Device
to	O
come	O
out	O
of	O
the	O
slot	O
"	O
melted	O
"	O
.	O
</s>
<s>
BYTE	B-Application
wrote	O
,	O
"	O
the	O
integrated	O
circuits	O
tended	O
to	O
wander	O
out	O
of	O
their	O
sockets	O
"	O
.	O
</s>
<s>
It	O
has	O
been	O
rumored	O
Apple	O
advised	O
customers	O
to	O
tilt	O
the	O
front	O
of	O
the	O
Apple	B-Device
III	I-Device
six	O
inches	O
above	O
the	O
desk	O
and	O
then	O
drop	O
it	O
to	O
reseat	O
the	O
chips	O
as	O
a	O
temporary	O
solution	O
.	O
</s>
<s>
The	O
new	O
logic	O
board	O
was	O
laid	O
out	O
by	O
one	O
designer	O
on	O
a	O
huge	O
drafting	O
board	O
,	O
rather	O
than	O
using	O
the	O
costly	O
CAD-CAM	O
system	O
used	O
for	O
the	O
previous	O
board	O
,	O
and	O
the	O
new	O
design	O
worked	O
.	O
</s>
<s>
Earlier	O
Apple	B-Device
III	I-Device
units	O
came	O
with	O
a	O
built-in	O
real	O
time	O
clock	O
.	O
</s>
<s>
Eventually	O
,	O
Apple	O
solved	O
this	O
problem	O
by	O
removing	O
the	O
real-time	O
clock	O
from	O
the	O
Apple	B-Device
III	I-Device
's	O
specification	O
rather	O
than	O
shipping	O
the	O
Apple	B-Device
III	I-Device
with	O
the	O
clock	O
pre-installed	O
,	O
and	O
then	O
sold	O
the	O
peripheral	O
as	O
a	O
level	O
1	O
technician	O
add-on	O
.	O
</s>
<s>
Microsoft	O
and	O
Apple	O
each	O
developed	O
their	O
own	O
versions	O
of	O
BASIC	O
for	O
the	O
Apple	B-Device
III	I-Device
.	O
</s>
<s>
Apple	B-Device
III	I-Device
Microsoft	O
BASIC	O
was	O
designed	O
to	O
run	O
on	O
the	O
CP/M	B-Application
platform	O
available	O
for	O
the	O
Apple	B-Device
III	I-Device
.	O
</s>
<s>
Apple	O
Business	O
BASIC	O
shipped	O
with	O
the	O
Apple	B-Device
III	I-Device
.	O
</s>
<s>
Donn	O
Denman	O
ported	O
Applesoft	B-Language
BASIC	I-Language
to	O
SOS	B-Operating_System
and	O
reworked	O
it	O
to	O
take	O
advantage	O
of	O
the	O
extended	O
memory	O
of	O
the	O
Apple	B-Device
III	I-Device
.	O
</s>
<s>
Both	O
languages	O
introduced	O
a	O
number	O
of	O
new	O
or	O
improved	O
features	O
over	O
Applesoft	B-Language
BASIC	I-Language
.	O
</s>
<s>
Both	O
languages	O
replaced	O
Applesoft	O
's	O
single-precision	O
floating-point	O
variables	O
using	O
5-byte	O
storage	O
with	O
the	O
somewhat-reduced-precision	O
4-byte	O
variables	O
,	O
while	O
also	O
adding	O
a	O
larger	O
numerical	O
format	O
.	O
</s>
<s>
Apple	B-Device
III	I-Device
Microsoft	O
BASIC	O
provides	O
double-precision	O
floating-point	O
variables	O
,	O
taking	O
8	O
bytes	B-Application
of	O
storage	O
,	O
while	O
Apple	O
Business	O
BASIC	O
offers	O
an	O
extra-long	O
integer	O
type	O
,	O
also	O
taking	O
8	O
bytes	B-Application
for	O
storage	O
.	O
</s>
<s>
Both	O
languages	O
also	O
retain	O
2-byte	O
integers	O
,	O
and	O
maximum	O
255-character	O
strings	O
.	O
</s>
<s>
Incorporation	O
of	O
disk-file	O
commands	O
within	O
the	O
language	O
.	O
</s>
<s>
Apple	O
Business	O
BASIC	O
had	O
an	O
option	O
,	O
in	O
addition	O
to	O
directly	O
specifying	O
the	O
format	O
with	O
a	O
string	O
expression	O
,	O
of	O
giving	O
the	O
line	O
number	O
where	O
an	O
IMAGE	O
statement	O
gave	O
the	O
formatting	O
expression	O
,	O
similar	O
to	O
a	O
FORMAT	O
statement	O
in	O
FORTRAN	B-Application
.	O
</s>
<s>
External	O
binary	O
subroutines	O
and	O
functions	O
are	O
loaded	O
into	O
memory	O
by	O
a	O
single	O
INVOKE	O
disk-command	O
that	O
loads	O
separately-assembled	O
code	O
modules	O
.	O
</s>
<s>
Graphics	O
are	O
supported	O
with	O
an	O
INVOKEd	O
module	O
,	O
with	O
features	O
including	O
displaying	O
text	O
within	O
graphics	O
in	O
various	O
fonts	O
,	O
within	O
four	O
different	O
graphics	O
modes	O
available	O
on	O
the	O
Apple	B-Device
III	I-Device
.	O
</s>
<s>
Despite	O
devoting	O
the	O
majority	O
of	O
its	O
R&D	O
to	O
the	O
Apple	B-Device
III	I-Device
and	O
so	O
ignoring	O
the	O
II	O
that	O
for	O
a	O
while	O
dealers	O
had	O
difficulty	O
in	O
obtaining	O
the	O
latter	O
,	O
the	O
III	O
's	O
technical	O
problems	O
made	O
marketing	O
the	O
computer	O
difficult	O
.	O
</s>
<s>
Ed	O
Smith	O
,	O
who	O
after	O
designing	O
the	O
APF	B-Device
Imagination	I-Device
Machine	I-Device
worked	O
as	O
a	O
distributor	O
's	O
representative	O
,	O
described	O
the	O
III	O
as	O
"	O
a	O
complete	O
disaster	O
"	O
.	O
</s>
<s>
He	O
recalled	O
that	O
he	O
"	O
was	O
responsible	O
for	O
going	O
to	O
every	O
dealership	O
,	O
setting	O
up	O
the	O
Apple	B-Device
III	I-Device
in	O
their	O
showroom	O
,	O
and	O
then	O
explaining	O
to	O
them	O
the	O
functions	O
of	O
the	O
Apple	B-Device
III	I-Device
,	O
which	O
in	O
many	O
cases	O
did	O
n't	O
really	O
work	O
"	O
.	O
</s>
<s>
The	O
company	O
was	O
able	O
to	O
eventually	O
raise	O
monthly	O
sales	O
to	O
5	O
,	O
000	O
,	O
but	O
the	O
IBM	B-Device
PC	I-Device
's	O
successful	O
launch	O
had	O
encouraged	O
software	O
companies	O
to	O
develop	O
for	O
it	O
instead	O
,	O
prompting	O
Apple	O
to	O
shift	O
focus	O
to	O
the	O
Lisa	B-Device
and	O
Macintosh	B-Device
.	O
</s>
<s>
The	O
PC	O
almost	O
ended	O
sales	O
of	O
the	O
Apple	B-Device
III	I-Device
,	O
the	O
most	O
closely	O
comparable	O
Apple	O
computer	O
model	O
.	O
</s>
<s>
Apple	O
finally	O
discontinued	O
the	O
Apple	B-Device
III	I-Device
series	O
on	O
April	O
24	O
,	O
1984	O
,	O
four	O
months	O
after	O
introducing	O
the	O
III	O
Plus	O
,	O
after	O
selling	O
only	O
65,000	O
-75	O
,	O
000	O
units	O
and	O
replacing	O
14,000	O
defective	O
units	O
.	O
</s>
<s>
Jobs	O
said	O
that	O
the	O
company	O
lost	O
"	O
infinite	O
,	O
incalculable	O
amounts	O
"	O
of	O
money	O
on	O
the	O
Apple	B-Device
III	I-Device
.	O
</s>
<s>
The	O
file	B-Application
system	I-Application
and	O
some	O
design	O
ideas	O
from	O
Apple	B-Operating_System
SOS	I-Operating_System
,	O
the	O
Apple	B-Device
III	I-Device
's	O
operating	B-General_Concept
system	I-General_Concept
,	O
were	O
part	O
of	O
Apple	B-Operating_System
ProDOS	I-Operating_System
and	O
Apple	B-Application
GS/OS	I-Application
,	O
the	O
major	O
operating	B-General_Concept
systems	I-General_Concept
for	O
the	O
Apple	B-Device
II	I-Device
series	I-Device
following	O
the	O
demise	O
of	O
the	O
Apple	B-Device
III	I-Device
,	O
as	O
well	O
as	O
the	O
Apple	B-Device
Lisa	I-Device
,	O
which	O
was	O
the	O
de	O
facto	O
business-oriented	O
successor	O
to	O
the	O
Apple	B-Device
III	I-Device
.	O
</s>
<s>
The	O
hierarchical	B-Application
file	I-Application
system	I-Application
influenced	O
the	O
evolution	O
of	O
the	O
Macintosh	B-Device
:	O
while	O
the	O
original	O
Macintosh	B-Application
File	I-Application
System	I-Application
(	O
MFS	O
)	O
was	O
a	O
flat	O
file	B-Application
system	I-Application
designed	O
for	O
a	O
floppy	B-Device
disk	I-Device
without	O
subdirectories	O
,	O
subsequent	O
file	B-Application
systems	I-Application
were	O
hierarchical	O
.	O
</s>
<s>
By	O
comparison	O
,	O
the	O
IBM	B-Device
PC	I-Device
's	O
first	O
file	B-Application
system	I-Application
(	O
again	O
designed	O
for	O
floppy	B-Device
disks	I-Device
)	O
was	O
also	O
flat	O
and	O
later	O
versions	O
(	O
designed	O
for	O
hard	O
disks	O
)	O
were	O
hierarchical	O
.	O
</s>
<s>
At	O
the	O
start	O
of	O
the	O
Walt	O
Disney	O
Pictures	O
film	O
TRON	B-Language
,	O
lead	O
character	O
Kevin	O
Flynn	O
(	O
played	O
by	O
Jeff	O
Bridges	O
)	O
is	O
seen	O
hacking	O
into	O
the	O
ENCOM	O
mainframe	B-Architecture
using	O
an	O
Apple	B-Device
III	I-Device
.	O
</s>
