LEXIBOOK PLC251 Manual Del Usuario página 2

PLC251IM
Introduction
Congratulations! You have just acquired the PLC251 Semi Desktop Calculator from Lexibook®.
This calculator will allow you to perform standard calculations as well as advanced functions such as
percentage, memory, profit analysis, and euro conversions.
In order to get the most out of your PLC251 calculator, read this instruction manual carefully and keep it in
a safe place for future reference.
Keys
The "00" key allows you to quickly enter hundreds. Example: Press "5", then the "00" key, and the
calculator will display "500".
The "+/-" key allows you to change a positive number to negative, or vice versa.
If you repeatedly press the calculation signs (+, -, x, ÷), the calculation will be repeated.
The decimal point selector allows you to select from 0, 2, 4 decimal places, or a floating decimal place
(position F), or an automatic conversion to 2 decimal places (position A).
The round down/up selector allows you to choose round down to the nearest lower unit (position " "),
round up to the nearest higher unit (position " "), or a result automatically rounded up/down (position "5/4").
To correct a number, press the " " key until you reach the number you want to enter. To completely delete
a number you have just entered, press "C/CE" once. The "C/CE" key is also used to turn on the calculator.
The % key allows you to perform operations with percentage values.
M+/M-/MRC – Memory operation keys.
COST/SELL/MARGIN – these keys are used to perform a profit analysis.
LOCAL/EURO – these keys are used to perform currency conversions.
Calculations
Before using your calculator for the first time, please follow the steps given below:
1. Remove carefully the protection tab of the battery compartment by pulling on the end of the tab.
2. If the tab remains jammed, use a coin to remove the battery compartment, the battery and then the tab.
Replace the battery (+ side facing up) and close back the battery compartment.
3. Remove the static label from the LCD screen and press the Reset key.
1. Basic calculations
To calculate Press
23 + 203 - 56 = 23 + 203 - 56 =
562 x (38-96) = 38 - 96 x 562 =
(23 x 6 + 78) ÷ 2.3 - 89 = 23 x 6 + 78 ÷ 2.3 - 89=
1234567 x 9876543 = 1234567 x 9876543 =
C/CE
C/CE
2. Percentage calculations
To calculate Press
20€ + 6% = 21.2€ 20 + 6 %
150€ minus 20% = 120€ 150 - 20 %
Copyright Lexibook 2008
Display
170
-32596
4.9130434782
MEMORY ERROR
12.19325406118
12.19325406118
0
Display
21.2
120
1
PLC251IM
3. Calculations using memory
Before saving a new value to the memory, the content must first be deleted by pressing the 'MRC' key twice
and then pressing the 'C/CE' key to delete all previous calculations.
To add a value to the memory, enter the chosen number or calculation and then press the 'M+' key. The
result of the calculation is worked out and, if applicable, added to the value in the memory.
When 'M' is displayed, it indicates that a value is stored in the memory.
To deduct a value from the memory, enter the chosen number or calculation, and then press the "M-" key.
The number entered (or the result of the calculation) is deducted from the value stored in the memory. In
order to display the value stored in the memory press "MRC". To delete the memory content, press twice
on "MRC", the caption "M" will disappear.
To save a number in the memory Press
2 x 3 = 6 2 x 3 "M+"
-) 3 x 4 = 12 3 x 4 "M-"
+) 4 x 5 = 20 4 x 5 "M+"
14 MRC
MRC
4. Profit analysis
To calculate the margin Press
Cost: €60 60[COST]100[SELL]
Sale price: €100
Margin?
Press
To calculate the cost
Sale price: €200 200[SELL] 6 [MARGIN]
Margin: 6%
Cost?
To calculate the sale price Press
Cost: €120
120[COST]5[MARGIN]
Margin: 5%
5. Currency function
To set exchange rate Press
5
RATE
LOCAL
Press
Recall exchange rate
RATE
EURO
Press
Calculation:
Exchange rate: 1EURO = 5 units of
10 [LOCAL]
local currency.
Value of 10 euros in local currency?
Calculation: Press
Exchange rate: 1EURO = 5 units of
50 [EURO]
local currency.
Value of 50 units of local currency in euros?
2
Display
M 6
M 12
M 20
M 14
14
Display
MARGIN%40
Display
COST 188
Display
SELL 126.31
Display
5
RATE 5
C1C2 5
Display
RATE 0
C2 5
Display
50
Display
10
Copyright Lexibook 2008