Citizen SDC-640II Manual De Usuario
File name: D494_IB_English_081919.doc Date : 2008/9/19
Size : 250x72mm(成型 : 125x72mm)
* POWER SUPPLY
English
CITIZEN model SDC-640II is a dual-powered (high power solar +
back-up battery) calculator operative under any lighting conditions.
-Auto power-off function-
The calculator switches the power off automatically if there has
been no key entry for about 6 minutes.
-Battery change-
If the back-up battery needs to be changed, open the lower cabinet
to remove the old battery and insert a new battery in the indicated
polarity. After changing battery, please use a metal, elliptical object
to press the RESET pad on printed circuit board.
back-up battery) calculator operative under any lighting conditions.
-Auto power-off function-
The calculator switches the power off automatically if there has
been no key entry for about 6 minutes.
-Battery change-
If the back-up battery needs to be changed, open the lower cabinet
to remove the old battery and insert a new battery in the indicated
polarity. After changing battery, please use a metal, elliptical object
to press the RESET pad on printed circuit board.
* KEY INDEX
English
[
C
ON
] : Power on / Clear key.
[CE] : Clear entry.
[00
t0] : Shift-back key.
[M+] : Memory plus key.
[M–] : Memory minus key.
[+ / –] : ±Sign change key
[MR] : Memory recall key
[MC] : Memory clear key.
[MU] : Price Mark-up/down key
[MII+] [MII–] [MII
[MII+] [MII–] [MII
R
C
C
] : The Second Memory Key
Decimal place selection switch
– F –
– 0 – 2 – 3 –
– A –
– 0 – 2 – 3 –
– A –
Floating decimal mode
Fixed decimal mode
ADD–mode automatically enters the monetary
decimal in addition and subtraction calculations
Fixed decimal mode
ADD–mode automatically enters the monetary
decimal in addition and subtraction calculations
5/4
Round-up / Round-off / Round-down switch
The Signs Of The Display Mean The Following:
MEMORY:The first memory loaded.
–MINUS:Minus ( or negative)
MEMORYII:The second memory loaded.
ERROR:Overflow-error.
* OPERATION EXAMPLES
English
1.Calculation Examples
Before performing each calculation, press the [
C
ON
] key.
Example
Key
operation
Display
1 x 2 x 3 = 6
[
C
ON
]
1 [x] 2 [x] 3 [=]
[
C
ON
]
0.
6.
0.
2 x 3 = 6
2 [x] 2 [CE] 3 [=]
6.
5/4
2 + 4 + 6 = 12
2 [+] 3 [+] 6 [
C
ON
]
2 [+] 4 [+] 6 [=]
0.
12.
1234 x 100
= 123,400
= 123,400
12345 [00
t0]
[x] 100 [=]
1'234
123'400
5 x 3
÷ 0.2 = 75
5 [x] 3 [
÷] 0.2 [=]
75.
300 x 27% = 81
300 [x] 27 [%]
81.
56
11.2
x 100% = 20%
11.2 [
÷] 56 [%]
20.
30 + (30 x 40%) = 42
30 [+] 40 [%]
42.
30 – (30 x 40%) = 18
30 [–] 40 [%]
18.
5
4
= 625
5 [x] [=] [=] [=]
625.
$14.90 + $0.35 – $1.45
+ $12.05 = $25.85
+ $12.05 = $25.85
1490 [+] 35 [–] 145 [+]
1205 [=]
1205 [=]
25.85
1 / 30 = 0.0333….
30 [
÷] [=]
0.03
5/4
4)
-
5
x
(2
1
= 0.166….
2 [x] 5 [–] 4 [
÷] [=]
0.16
2.Memory Calculation
[
C
ON
]
0.
12 [x] 4 [M+] 20 [
÷] 2 [M–]
MEMORY
10.
[MR]
MEMORY
38.
(12 x 4) –
(20
(20
÷ 2) = 38
[MC] [CE]
0.
15 [x] 2 [M+] 20 [x] 3 [M+]
MEMORY
60.
25 [x] 4 [M+]
MEMORY
100.
[MR]
MEMORY
190.
10 [
÷] 5 [MII+] 4 [x] 2 [MII+]
MEMORY MEMORY II
8.
[MII
R
C
C
]
MEMORY MEMORY II
10.
[MR] [
÷]
MEMORY MEMORY II
190.
[MII
R
C
C
]
MEMORY MEMORY II
10.
[=]
MEMORY MEMORY II
19.
5/4
15 x 2 = 30
20 x 3 = 60
25 x 4 = 100
(total A = 190)
10
20 x 3 = 60
25 x 4 = 100
(total A = 190)
10
÷ 5 = 2
4 x 2 = 8
(total B = 10)
A
(total B = 10)
A
÷ B = 19
[MII
R
C
C
] [MII
R
C
C
] [MC] [
C
ON
]
0.
3.Constant Calculation
2 + 3 = 5
2 [+] 3 [=]
5.00
4 + 3 = 7
4 [=]
7.00
3 x 4.111 = 12.333
3 [x] 4.111 [=]
12.34
5/4
3 x 6 = 18
6 [=]
18.00
4.Overflow Error Clear
12345678901234
x 100
= 1234567890123400
x 100
= 1234567890123400
123456789012345
[00
[00
t0] [x] 100 [=]
[
C
ON
]
ERROR
ERROR
ERROR
12’345’678’901’234
12.345678901234
0.
5.PRICE MARK-UP & DOWN CALCULATION
200+(P x 20%)=P
P=
20%
-
1
200
= 250
250–200 = 50
200 [
÷] 20 [MU]
[MU]
250.
50.
5/4
125–(P x 20%)=P
P=
25%
1
125
+
= 100
125–100 = 25
125 [
÷] 25 [+/–] [MU]
[MU]
100.
25.
6.DELTA PERCENT
5/4
150
150
-
180
x100%
= 20%
180 [–] 150 [MU]
20.