NexxTech 6500505 User Manual
8-Digit Pocket Calculator
6500505
OWNER’S MANUAL — Please read before using this equipment.
FEATURES
Your 8-Digit Pocket Calculator is small, yet it has the
features you use the most. It includes the four basic
math functions (addition, subtraction, multiplication,
an
d division), plus it has percentage, square root,
and memory functions. Its other features include:
Dual Power — the solar cell powers the calculator when
there is enough light, and the replaceable battery powers
the calculator when the light is dim.
Large 8-Digit Liquid Crystal Display —makes it easy to
d calculation results.
rea
Automatic Power Off — conserves battery power by
turning off your calculator if you do not press a key for
out 7 minutes.
ab
A QUICK LOOK AT THE
CALCULATO
ON/C — Press ON/C to
rn on your calculator or
tu
clear a calculation.
to
R
CE — Press CE to clear an
incorrect entry before you
press an operation key.
ERRORS
Your calculator displays ERROR and does not allow fur-
calculations if you:
ther
• try to take the square root of a negative number.
• try to divide by zero.
• perform a calculation that results in an answer greater
than 99,999,999.
this case, you can determine the approximate
In
answer by counting the number of digits displayed to
the left of the decimal point, putting that many zeros
on the right side of the number, then deleting the dec-
l point.
ima
For example, if the calculator displays ERROR
3423.838
342,383,810,000. To clear the error and continue the
calculation with the displayed number, press CE.
To clear the entire calculation, press ON/C.
1, the approximate answer is
PERFORMING CALCULATIONS
+/– — Press to change the displayed num-
from positive (+) to negative (–) or from
ber
ive (–) to positive (+). MINUS– ap-
negat
pears when the value is negative.
Note: If you press an incorrect operator key (+, –, ×, or ÷),
simply
press the correct one and continue with your calcu-
latio
n.
To Calculate You Press You See
64
% tax = 21.2 20 + 6 % 21.2
$20 + 6
discounted 20% = 120 150 – 20 % 120.
$150
64 8.
Constant Calculations
Press = to repeat the last function.
To Calculate You Press You See
5 × 5 × 5 × 5 + 2 + 2 = 629 5 x = = = + 2 = = 629.
For addition, subtraction, and division, the value you enter
before pressing = is the constant. For multiplication, the
value you enter before pressing × is the constant.
Memory Calculations
To store a value in memory, first press (memory recall/
cle
ar) twice to clear the memory, then press ON/C to clear
l calculations.
al
To add a value to memory, enter the number or calculation
you want to add, then press
current calculation (if one is pending) and adds that value
to memory.
M+. The calculator totals the
MEMORY appears to show that a value is stored in memo-
ry.
To subtract a value from memory, enter the number or calculation you want to subtract, then press M–. The calculator totals the current calculation (if one is pending) and
subtracts that value from memory.
To recall the value from memory, press . The memory
value appears.
To clear the contents in memory, press twice so MEM-
ORY disappears.
Modifying or tampering with the calculator’s internal components can cause a malfunction and might invalidate its
warranty. If your calculator is not performing as it should,
take it to your local electronic store for assistance.
Follow these steps to replace the battery.
1. Place the calculator face down on a flat surface.
2. Use a Phillips screwdriver to remove the screw securing the back cover.
3. Slide the back cover down to remove it.
4. Remove the old battery.
5. Position the new battery so the positive (+) side is up, then press the battery into the battery holder.
6. Slide the front and back case halves back together, then reinsert and tighten the screw.
SPECIFICATIONS
Display Size (HW) .......................................... 3/4 × 2 3/16 inches
(18.5 × 56mm)
Battery Life ...................................................... About 6000 Hours
Dimensions (HWD) ............................. 4 9/16 × 2 11/16 × 1/4 inch
(116 × 69 × 6mm)
REPLACING THE BATTERY
Although your calculator uses solar power most of the
time, the supplied backup battery will eventually become
weak and need to be replaced. If the display dims or the
calculator speed slows down, replace the battery with a
type 389A button-cell battery. For the best performance
and longest life, we recommend alkaline batteries.
Specifications are typical; individual units might vary. Specifications are subject to change and improvement without notice.
07A00 Printed in China
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