Ricoh RICOMAC 122'1P Operating Instructions Manual
OPERATING
INSTRUCTIONS
ELECTRONIC CALCULATOR
RICOMAC
122'1P
CONTENTS
KEYBOARD.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
2
SPE(fFIC
AT
IONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
EXPLANATION
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4
PRINTING MECHANISM
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.
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7
OPERATING
EXAMPLES
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.
8
I) Addition and Subtrac
ti
on . . . .
....
. . . .
.. .. ..
..........
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8
2) Multiplication
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. .
...... ..
.........
. .
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.
9
3)
Divi
sion
.. .. ..
. . .
10
4)
Power Calculation . . . . . . . . . . . . . . . . . . . . .
II
5) Reciprocal Calcula tion
...............
11
6) Mixed Calculation
.... . ...
.
12
7)
Calculation
of
Percentage
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. . .
.....
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12
8)
Two Memory Accumulation
....
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13
9)
Grand total . . . . . . . . .
......
_ .
......
.
14
KEYBOARD
RICOMAC
12 2
1P
~6
1
~
)
(if
CD
~_:v
®
(i21
®
CD
(z
Oj
@
(i~)
@
JS)
®
~~7~
(j)
®
@
®
@
@
@
@
@
@
l.
Round-oil
selector
2.
Paper
fecd
key
3.
Nc~ativc
entry
key
4.
Exchangc
kcy
5.
Non-add key
6.
Clear
key
7. NUlllerul k
eys
H.
Decimal
point
key
9.
Mem
ory I
Subtraction key
10.
1l.
12.
13.
14.
15.
16.
17 _
18.
Memo ry I
Addition key
~[emor
y
I
Total
key
~-femory
[
Subtotal
key
Accumulati
on equ
al
key
Equal key
Multiplicati
on
key
Divis
ion
key
Me
mory LI
Addition
key
Memor
y II
Subtraction
key
19.
Mem
ory
II
Subtotal
key
20.
Me
mor
y II T
otal key
2l.
Perce
nta
ge k
ey
22.
A
cc
umulati
on s
witch
23.
Decimal
point
selector
24.
Power
swit
ch
25.
Me
mor
y la
mp
26.
Powc r
limp
27. P
aper reset kno b
SPECIFICA
nONS
1.
CAPACI1Y
:
Entry.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
12 digit s
Addition and
Subtraction.
. . . . . . . . . . . . . . . . . . . . . . 12 digits
Multiplication :
Multiplier . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
12 digit s
Multiplicand . . . . . . . .
....
..
...
. . .
...
. . .
..
12 digits
Product
. . . . . . .
.....
.
...
. . . . .
.....
. . . . . 12 digits
Division :
Divis
or
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 digi
ts
Dividend
....
. . . . .
... ......
. . . . .
...
. . . " 12 digits
Quotien t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 digits
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 digits
Maximum
Decimals.
. . . . . . . . . . . . . . . . . . . . . . . .
..
11
digits
2.
PRINTING:
Number
of
print
characters :
16
(12
numerals, 1 decimal pOint, 1 negative sign, and 2 symbols)
Speed: 2.7 lines per second
Paper:
Standard
roll paper
Width
..
. . . . . . . . . . . . . . . . .
... ...
. .
.. ..
. . . 57
mm
Diameter
.....
. . . . .
... ......
. . . . .....
70
mm
max.
Ribbon:
2-color (Black
and
Red)
Width . . . . . . . . . . . . . . . . . .
...
. . . . . .
...
.. ..
13
mm
Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 m
3.
COMPONENTS
:
LSI
4.
VOLTAGE
:
AC
115V, 50/
60
Hz
5.
POWER
CONSUMPTION:
20W
6.
SERVICE
TEMPERATURE:
o
~
40°C
7.
DIMENSIONS:
9-7/16"
(W) x
11-13/16"
(D) x 3-25/32"
(H)
8.
WEIGHT:
4.1 kg
EXPLANATION
(See keyboard picture on Page 2)
I .
.r
5/4 j ROUND-OFF SELECTOR
a..r
truncate or drop-off position
b. 5/4 rounds 5 or more
c.
j rounds 1 or more
2.
IFEEDlpAPER
FEED KEY
This key advances the paper.
3. NEGATIVE ENTRY KEY
When
negative numbers are to be entered, this key must
be
depressed to
give
negative
sign
to entry .
4 .
CD
EXCHANGE KEY
Permits reciprocal calculation and helps to check previous entry or result.
5.
~
NON-ADD
KEY
Prints numbers such
as
dates, slip numbers etc.
6.
@]
CLEAR
KEY
When
@]
key
is
depressed after entry. only indexed figure
is
cleared.
xBy@]
When
@]
key
is
depressed twice after entry ,
all
data except
in
memory
is
cleared.
x f8 y
@]
:.cJ
When
[S key
is
depressed after function,
all
data except
in
memory
is
cleared. x 8
@]
Note:
To print out the memory contents,
use ~ key after adding, subtracting or accumulating: thi s clears the
memory.
7.
rn
....
..
....
mNUMERAL KEYS
8. 8 DECIMAL POINT KEY
9.
8 1
MEMORY
I SUBTRACTION
KEY
10
. 8 I MEMORY I ADDITION KEY
11.
@I MEMORY I TOTAL
KEY
Pressing this key, when
CD
switch
is
in
depressed state, causes the data stored
in
MEMORY
I to additi-
vely enter MEMORY II.
12. 01 MEMORY I SUBTOTAL KEY
13.·
ACCUMULATION EQUAL
KEY
The results
of
multiplication and division are accumulated
in
the
MEMORY
I.
14.
§)
EQUAL KEY
Obtain the result
of
multiplication and division.
This key
will
add products and quotients
to
MEMORY
II
when
CIJ
switch
is
engaged .
15.
lB1
MUL
TIPLICA TION KEY
16
.
r±l
DIVISION
KEY
17. (±]
II
MEMORY
II
ADDITION KEY
18.
8 n MEMORY
II
SUBTRACTION KEY
19.
@)
I1
MEMORY
II
SUBTOTAL KEY
20.
~
II
MEMORY
II
TOTAL KEY
21.
00
PERCENTAGE
KEY
In multiplication, a depression
of
this key will automatically print the tax or discount rate , the dollar
and cent amount
of
the tax or discount and the net.
22.
IT)
ACCUMULATION
SWITCH
When
m
SWitch
is
engaged, accumulation into MEMORY
II
of
produ c
ts
and quotients resul
ts
from
a
depression
of
the
El
key
23 . F + 012346 DECIMAL POfNT SELECTOR
With the selector set at
"F",
you have a floating deci
mal point. Setting the selector at o
ne
of
the
positions
"0"
to
"6"
fixes the decimal point and
all
the subsequent number entries and operations will
be effected by referring
to
that position
of
the decimal point.
"+"
is
for selecting
ADD
mode: with this k
ey
depressed, the result
of
addition and subtraction
as
well
as
multiplication and division shows up with its deci
mal
point appearing at 2.
24.
tl
POWER
SWITCH
25. 0 MEMORY MEMORY
LAMP
If this lamp
is
on,
it
means that
MEMORY
II
has data
in
stor
e.
26.
CJ
POWER
POWER
LAMP
27. PAPER RESET
KNOB
To draw paper out
as
when paper jamming has occurred,
use
this knob . (See
on page
9)
Note:
After unpacking the machine, make sure the ribbon
is
not too loose before turning on the power
switch.
RICOMAC
I221P has the following special function
1.
When
the result
of
an operation exceeds
12
digits, the decimal po
in
t (if
it
is
in
the result)
au
tomatically
shifts toward the right, bringing the entire print with it toward the right.
ThllS
, such
an
excess does
not result
in
ERROR .
EXAMPLE:
Problem Instruct
Keying
Printing
12345679 x
18
DEC
6 12345679
f8l
12 , 345,679.
x
18
§)
18.
=
222 , 222
,222
.000
2. Automatic data clearing occurs when POWER
SWITCH
is
turned on or when
an
error occurs during
calculating operation. This feature makes
it
unnecessary
to
press @ key for such data
cle
aring.
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