<s>
The	O
ICT	B-Device
1301	I-Device
and	O
its	O
smaller	O
derivative	O
ICT	B-Device
1300	I-Device
were	O
early	O
business	O
computers	O
from	O
International	O
Computers	O
and	O
Tabulators	O
.	O
</s>
<s>
Typical	O
of	O
mid-sized	O
machines	O
of	O
the	O
era	O
,	O
they	O
used	O
core	O
memory	O
,	O
drum	B-General_Concept
storage	I-General_Concept
and	O
punched	B-Architecture
cards	I-Architecture
,	O
but	O
they	O
were	O
unusual	O
in	O
that	O
they	O
were	O
based	O
on	O
decimal	O
logic	O
instead	O
of	O
binary	O
.	O
</s>
<s>
Its	O
main	O
memory	O
came	O
in	O
increments	O
of	O
400	O
words	O
of	O
48	O
bits	O
(	O
12	O
decimal	O
digits	O
or	O
12	O
four-bit	O
binary	O
values	O
,	O
0-15	O
)	O
plus	O
two	O
parity	B-Error_Name
bits	I-Error_Name
.	O
</s>
<s>
Backing	O
store	O
was	O
magnetic	B-General_Concept
drum	I-General_Concept
and	O
optionally	O
one-inch-	O
,	O
half-inch	O
-	O
or	O
quarter-inch-wide	O
magnetic	O
tape	O
.	O
</s>
<s>
Input	O
was	O
from	O
80-column	O
punched	B-Architecture
cards	I-Architecture
and	O
optionally	O
160-column	O
punched	B-Architecture
cards	I-Architecture
and	O
punched	O
paper	O
tape	O
.	O
</s>
<s>
Output	O
was	O
to	O
80-column	O
punched	B-Architecture
cards	I-Architecture
,	O
line	O
printer	O
,	O
and	O
optionally	O
to	O
punched	O
paper	O
tape	O
.	O
</s>
<s>
The	O
machine	O
ran	O
at	O
a	O
clock	O
speed	O
of	O
1MHz	O
and	O
its	O
arithmetic	B-General_Concept
logic	I-General_Concept
unit	I-General_Concept
(	O
ALU	O
)	O
operated	O
on	O
data	O
in	O
a	O
serial-parallel	O
fashion	O
—	O
the	O
48-bit	O
words	O
were	O
processed	O
sequentially	O
four	O
bits	O
at	O
a	O
time	O
.	O
</s>
<s>
The	O
electronics	O
consist	O
of	O
over	O
4,000	O
printed	O
circuit	O
boards	O
each	O
with	O
many	O
germanium	O
diodes	O
(	O
mainly	O
OA5	O
)	O
,	O
germanium	O
transistors	B-Application
(	O
mainly	O
Mullard	O
GET872	O
)	O
,	O
resistors	O
,	O
capacitors	O
,	O
inductors	O
,	O
and	O
a	O
handful	O
of	O
thermionic	O
valves	O
and	O
a	O
few	O
dozen	O
relays	O
operated	O
when	O
buttons	O
were	O
pressed	O
.	O
</s>
<s>
They	O
also	O
had	O
the	O
advantage	O
of	O
programmers	O
not	O
having	O
to	O
learn	O
binary	O
or	O
octal	O
arithmetic	O
as	O
the	O
instruction	B-General_Concept
set	I-General_Concept
was	O
pure	O
decimal	O
and	O
the	O
arithmetic	O
unit	O
had	O
no	O
binary	O
mode	O
,	O
only	O
decimal	O
or	O
pounds	O
,	O
shillings	O
and	O
pence	O
.	O
</s>
<s>
The	O
card	O
reader	O
could	O
read	O
600	O
standard	O
punched	B-Architecture
cards	I-Architecture
per	O
minute	O
,	O
each	O
with	O
a	O
capacity	O
of	O
up	O
to	O
80	O
characters	O
.	O
</s>
<s>
It	O
also	O
had	O
400	O
words	O
of	O
'	O
reserved	O
 '	O
storage	O
where	O
the	O
computer	O
's	O
bootstrap	B-Operating_System
program	I-Operating_System
(	O
then	O
called	O
Initial	O
Orders	O
)	O
was	O
stored	O
.	O
</s>
<s>
Four	O
of	O
the	O
tracks	O
held	O
data	O
,	O
four	O
more	O
tracks	O
held	O
the	O
inverse	O
of	O
the	O
data	O
and	O
there	O
was	O
a	O
parity	B-Error_Name
bit	I-Error_Name
for	O
both	O
groups	O
of	O
four	O
.	O
</s>
<s>
The	O
ICT	B-Device
1300	I-Device
was	O
identical	O
to	O
the	O
1301	O
in	O
every	O
way	O
except	O
that	O
its	O
card	O
reader	O
was	O
limited	O
to	O
300	O
cards	O
per	O
minute	O
and	O
its	O
line	O
printer	O
was	O
limited	O
to	O
300	O
lines	O
per	O
minute	O
.	O
</s>
<s>
It	O
tended	O
to	O
be	O
sold	O
with	O
less	O
core	O
storage	O
and	O
drum	B-General_Concept
storage	I-General_Concept
and	O
without	O
magnetic	O
tape	O
.	O
</s>
<s>
The	O
ICT	O
1302	O
was	O
a	O
larger	O
version	O
of	O
the	O
1301	O
with	O
the	O
new	O
ICT	O
standard	O
interface	O
for	O
connecting	O
peripheral	O
devices	O
(	O
the	O
standard	O
interface	O
was	O
later	O
used	O
on	O
the	O
ICT	B-Device
1900	I-Device
series	I-Device
)	O
.	O
</s>
<s>
Very	O
few	O
ICT	B-Device
1301	I-Device
computers	O
remain	O
in	O
existence	O
around	O
the	O
world	O
,	O
and	O
of	O
them	O
,	O
none	O
is	O
working	O
.	O
</s>
<s>
"	O
Flossie	O
"	O
is	O
the	O
nickname	O
given	O
to	O
an	O
ICT	B-Device
1301	I-Device
(	O
)	O
in	O
storage	O
at	O
The	O
National	O
Museum	O
of	O
Computing	O
at	O
Bletchley	O
Park	O
,	O
England	O
.	O
</s>
<s>
A	O
second	O
ICT	B-Device
1301	I-Device
,	O
which	O
is	O
close	O
to	O
operating	O
condition	O
,	O
is	O
on	O
display	O
at	O
the	O
Toitū	O
Otago	O
Settlers	O
Museum	O
in	O
Dunedin	O
,	O
New	O
Zealand	O
.	O
</s>
