Operating instructions

expressed in binary, octal, decimal and hexadecimal
systems.
Conversion to each system is performed by the
following Keys:
2ndF →BIN : Converts to the binary system. “BIN”
appears.
2ndF →OCT : Converts to the octal system. “OCT”
appears.
2ndF →HEX : Converts to the hexadecimal system.
“HEX” appears.
2ndF →DEC : Converts to the decimal system.
“BIN”,“OCT” ,“HEX” disappear from the display.
Note: Normally, you should keep the calculator in
the decimal mode. Some of the calculator’s features are
operative only in the decimal mode.
Examples:
1. Convert 35(decimal) to binary, octal and
hexadecimal numbers.
2. Convert 2F (hexadecimal) to decimal number.
3. What is the negative (complement) number of 63
(octal)?
4. 1001+11011=100100(binary).
5.2434(decimal)+1CF(hexadecimal)÷36(octal)=4621
(octal)=2449(decimal).
NO
Key to Press
Display
ON/C
0.
1
2ndF →DEC 3 5
2ndF →BIN
2ndF →OCT
2ndF →HEX
35.
100011.
43.
23.
2
2ndF →HEX 2 F
2ndF →DEC
2F.
47.
3
2ndF →OCT 6 3
+/-
63.
7777777715.
4
2ndF →BIN 1 0 0 1
+
1 1 0 1 1 =
100100.
5
2ndF →DEC 2 4 3
4 +
2ndF →HEX 1 C F
÷
2ndF →OCT 3 6
=
2ndF →DEC
2434.
1CF.
36.
4621.
2449.
22. Complex Number Calculations
To carry out addition, subtraction, multiplications,
and division using complex numbers, press 2ndF CPLX
to select the complex number mode.
 A complex number is represented in the a + bi
format. The “a” is the real part while the “bi” is the
imaginary part. When inputting the real part, you
should input the number before press a . When
inputting the imaginary part, you should input the
number before press b . To obtain the result press
= .
 Immediately after completing calculation, you can
recall the value of the real part with a , and the
value of the imaginary part with b .
 If the complex numbers are represented as polar
coordinates press 2ndF →xy the numbers are
input with a and b .
 Example(12-6i)+(7+18i)
Key to Press
Display
ON/C
0.
2ndF CPLX
(CPLX mode)
0.
1 2 a 6 +/- b +
-6.
7 a 1 8 b
18.
=
19.
b
12.
23. Statistical Calculations
Press 2ndF STAT to select statistics mode.
The following statistics can be obtained:
Mean of samples (x data)
sx
Sample standard deviation (x data)
σx
Population standard deviation (x
data)
n
Number of samples
∑x
Sum of samples (x data)
∑x
2
Sum of squares of samples (x data)
Example: Analyze the sample
67,55,51,100,87,89,60,82
Key to Press
Display
ON/C
0.
2ndF STAT
(STATmode)
0.
6 7 DATA
1.
5 5 DATA
2.
5 1 DATA
3.
1 0 0 DATA
4.
8 7 DATA
5.
8 9 DATA
6.
6 0 DATA
7.
8 2 DATA
8.
73.875
2ndF σx
16.84070589
n
8.
2ndF ∑x
591.
2ndF ∑x
2
45929.
sx
18.00347189
x
2
324.125
a) Data entry and Correction
Entered data is kept in the memory until 2ndF STAT
or OFF is pressed. Before entering new data, clear the
memory contents.
1) Data Entry
Data DATA .
Data × frequency DATA (To enter multiples of the
same data)
2) Data Correction
Correction prior to pressing DATA .
Delete incorrect data with ON/C .
Correction after pressing DATA.
Reenter the data to be corrected and press 2ndF
CD .
 The number displayed after pressing DATAor 2ndF
CD during data entry or correction is the number of
samples (n).
b) Statistical Calculation Formulas
S
x
In the statistical calculation formulas, an error will occur
when:
 The absolute value of the intermediate result or
calculation result is equal to or greater than 1×10
100
.
 The denominator is zero.
 An attempt is made to take the square root of a
negative number.
24. Errors
An error will occur if an operation exceeds the
calculation ranges, or if the wrong mathematical syntax is
attempted. In the case of an error, the display will show
“E”. An error can be cleared by pressing ON/C .
25. Battery Replacement
Notes on Battery Replacement
Improper handling of batteries can cause electrolyte
leakage or explosion. Be sure to observe the following
handling rules:
 Make sure the new batteries are the correct type.
 When installing, orientate the battery properly as
indicated in the calculator.
When to Replace the Battery
If the display becomes dim and has poor contrast,
replace the battery.
Replacement Procedure
1. Turn the power off by pressing OFF .
2. Remove two screws. (Fig.1)
3. Lift the battery cover to remove.
4. Remove the used battery then replace with one
fresh battery with the positive side (+) facing up. (Fig.2)
5. Replace the battery cover and screws.
6. Press the RESET switch (on the front).
 Make sure that the display appears as shown below.
If the display does not appear as shown, reinstall the
batteries and check the display once again.
（Fig.1） （Fig.2）
2
n
2
3
2
2
2
1
2
x+...+x+x+x=x∑
n
321
x+...+x+x+x=x∑
1n
xnΣx
22



n
Σx
_
x 
n
xnΣx
σx
22


_
x
_
x