KOM1102 Scientific Calculator User Manual

: June 13, 2024
: KOM

Table of Contents

SAFETY INSTRUCTIONS
OPERATION
Documents / Resources

COMP
SCIENTIFIC CALCULATOR KOM1102 Scientific Calculator USER’s MANUAL
model: KOM1102

SAFETY INSTRUCTIONS

Avoid using/storing it in extreme temperatures.
Protect this device from liquids and moisture.
Clean the case with soft, slightly damp cloth, without any abrasive agents.
Before installing the battery, make sure that the polarization is correct.
If the device does not turn on, replace the batteries.
Do not attempt to repair/disassemble this appliance yourself.
Take out the batteries if the device is not going to be used for a long time.

OPERATION

Calculation modes

Basic arithmetic: Przycisk
Standard deviation: Przycisk
Regression calculations: Przycisk

Basic arithmetic

Negative values inside of calculations must be enclosed within parentheses.
It is not necessary to enclose a negative exponent within parentheses.

Fraction calculations
Values are displayed in decimal format automatically whenever the total number of digits of a fractional value (integer + numerator + denominator) exceeds 10.

KOM1102 Scientific Calculator - Example

Result of calculations that mix fraction and decimal values are always decimal.
Decimal to fraction conversion

KOM1102 Scientific Calculator - Example 1 KOM1102
Scientific Calculator - Example 2

Degrees and minutes
You can perform sexagesimal calculations using degrees (hours), minutes and seconds, and convert between sexagesimal and decimal values.
Example 1: To convert the decimal value 2.258 to a sexagesimal value and then back to a decimal value:

Example 2:
To perform the following calculation: 12°34’56’’ X 3.45:

KOM1102 Scientific Calculator - Example 4

FIX, SCI, RND functions
To change the settings for the number of decimal places, the number of significant digits, or the exponential display format, press the MODE key a number of times until you reach the setup screen shown below.

Press the 1 button to select number of decimal places.
Press the 2 button to select number of significant digits.
Press the 3 button to select exponential display format.

Memory function
To clear independent memory, input 0, SHIFT, STO, M, M+.
Variables

There are nine variables (A, F, M, X, Y) which can be used to store data, constants, results and other values.
Perform the following key operation to delete data assigned to a particular variable: 0, SHIFT, STO, A. This operation will delete data assigned to A.

Scientific functions
Trigonometric functions

To change the default angle unit, press the MODE button twice. Select the unit with 1, 2 or 3 button.

Hyperbolic

Example 1: sinh 3.6 = 18.28545536
Example 2 sin-1 30 = 4.094622224
Logarithms

Example 1: log 1.23 = 0.0899051111|
---|---
Example 2: ln 90 (=loge90)= 4.09462224|
Example 3: e10=22026.46579|
Example 4: 10¹,⁵=31.6227766|
Example 5: 2-³ = 0.125|

Square roots, powers

KOM1102 Scientific Calculator - Example 12

KOM1102 Scientific Calculator - Example 13

Example 10: To determine how many different 4-digit values can be produced using the numbers 10 through 7.

Angle unit conversion

Press the and buttons to display angle unit menu. SHIFT DRG>
Press the 1, 2 or 3 to select the angle unit.
Coordinate conversion (Pol (x,y) Rec (r, θ))
Calculation results are automatically assigned to variables E and F.
To convert polar coordinates (r=2, θ=60°) to rectangular coordinates (x, y):
To convert rectangular coordinates ( ) to polar coordinates:

Engineering notation calculations
Example 1: To convert 56,088 meters to kilometers: 56088 = ENG
Example 2: To convert 0,08125 grams to milligrams: 0.08125 = ENG
Statistical calculations
Standard deviation

Press the , then the 2 button to go to the standard deviation mode. MODE
In the SD Mode and REG Mode, the button operates as the button.
Input data using the key sequence:
To clear statistical memory: M+ DT DT , , (scl), MODE
Values for n, Σx, Σx2, x-, σn, σn-1 can be recalled with:
Value| Perform this button operation
---|---
n| SHIFT S-SUM 1 =
| SHIFT S-SUM 2 =
| SHIFT S-SUM 3 =
| SHIFT S-VAR 1=
On| SHIFT S-VAR 2 =
on-1| SHIFT S-VAR 3 =
Each time you press button to register an input, the number of data input up to that point is indicated on the display (n value). DT

Regression calculations

Press the button, then the 3 button to go to the regression calculation.
In the SD Mode and REG Mode, the button operates as the button.
Input data using the key sequence: ‘ M .
Values of regression calculations may depend on input values and can be recalled with combinations below:

Recalled value|

Perform this button operation

---|---
| SHIFT S-SUM 1
| SHIFT S-SUM 2

| SHIFT S-SUM 3
| SHIFT S-SUM ► 1

| SHIFT S-SUM ► 2

| SHIFT S-SUM ► 3
| SHIFT S-VAR 1

xo-n

| SHIFT S-VAR 2

x6n-1

| SHIFT S-VAR 3

| SHIFT S-VAR ► 1

yo -n

| SHIFT S-VAR ► 2

yan-1

| SHIFT S-VAR ► 3

Regression coefficient A

| SHIFT S-VAR ► ► 1

Regression coefficient B

| SHIFT S-VAR ► ► 2

Regression calculation other that quadratic regression

Correlation coefficient r

| SHIFT S-VAR ► ► 3

| SHIFT S-VAR ► ► ►1

| SHIFT S-VAR ► ► ►2

The following shows they key operation to recall results in the case of quadratic regression.

Recalled value	Perform this button operation
SHIFT S-SUM ►► 1
SHIFT S-SUM ►► 2
SHIFT S-SUM ►► 3
Regression coefficient C	SHIFT S-VAR ►► 3
1	SHIFT S-VAR ►►► 1
2	SHIFT S-VAR ►►► 2
SHIFT S-VAR ►►► 3

The values above can be used inside of expressions the same way you use variables.
Linear regression

The regression formula: y=A+Bx
Logarithmic, exponential, power and inverse regression
Use the same key operations as linear regression to recall results for these types of regression.
The following shows the regression formulas for each type of regression.
◦ Logarithmic regression: y=A+Blnx
◦ Exponential regression: y=AeBx(ln y=lnA+B)
◦ Power regression: y=AxB(ln y=lnA+B ln)
Inverse regression: y=A+B*1x

Quadratic regression

Quadratic regression formula: y=A + Bx + Cx²

Correct Disposal of This Product (Waste Electrical & Electronic Equipment)
(Applicable in the European Union and other European countries with separate collection systems) This marking shown on the product or its literature, indicates that it should not be disposed with other household wastes at the end of its working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate this from other types of wastes and recycle it responsibly to promote the sustainable reuse of material resources. Household users should contact either the retailer where they purchased this product, or their local government office, for details of where and how they can take this item for environmentally safe recycling. Business users should contact their supplier and check the terms and conditions of the purchase contract. This product should not be mixed with other commercial wastes for disposal. Made in China for LECHPOL ELECTRONICS Sp. z o.o. Sp.k., ul. Garwolińska 1, 08-400 Miętne.

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