NexxTech 6500542 User Manual

12-Digit Dual-Power
Metal-Top

Desk Calculator

6500542

Owner’s Manual

Please read before using this equipment.

 Contents

Features ........................................................................................................... 2

A Look at Your Calculator .............................................................................. 3

Operation ......................................................................................................... 4

Turning On the Calculator .......................................................................... 4

Using the Special Function Keys ............................................................... 4

Clearing Entries .......................................................................................... 4

Rounding .................................................................................................... 4

Setting the Number of Decimal Places ...................................................... 4

Calculation Errors ....................................................................................... 5

Estimating Calculation Results ........................................................... 5

Calculation Examples ................................................................................. 6

Square Root ........................................................................................ 6

Percent ............................................................................................... 6

Grand Total ......................................................................................... 6

Memory Calculations .......................................................................... 7

Mark-Up Calculations .......................................................................... 7

Constants ................................................................................................... 9

Care ................................................................................................................ 10

Replacing the Battery ............................................................................... 10

Specifications ................................................................................................ 11

 Features

Your Nexxtech 12-Digit Dual Power
Metal Top Desk Calculator can be
powered from two different sources,
so you can use it almost anywhere.
Its built-in solar panel provides power
when you expose the calculator to
light. When there is not enough light,
the supplied battery provides power.

© 2000 ORBYX Electronics.

All Rights Reserved.

2

Features

Your calculator’s features include:

Large 12-Digit Display — makes
calculations easy to read.

Adjustable Display — tilts forward
for easy viewing.

Backspace Key — deletes the last
number entered.

in, and clear all numbers from memo
ry.

-

Mark-Up Key — helps you easily de­termine cost, final price, and profit
margin.

Automatic Shut-Off — conserves
battery power by automatically turn
ing off your calculator about 8–10
minutes after the last entry.

% Key — simplifies calculation of per­centages.

Grand Total Key — makes compli­cated calculations easier.

Four Function Memory — lets you
add to, subtract from, recall subtotals

Square Root Key — lets you quickly
compute the square root of a number.

 A Look at Your Calculator

5/4 — lets you
select how calcu­lation results are
rounded (see
“Rounding” on
Page 5).

MU (Mark-Up) —
lets you calculate
selling prices and
profit margins
(see “Mark-Up
Calculations” on
Page 8).

— deletes the
last digit entered
(see “Using the
Special Function
Keys” on Page 4).

GT (Grand Total)
— provides the
sum of all memo­rized numbers
(see “Grand To­tal” on Page 7).

F 0 2 3 4 A — lets
you select how
many digits ap­pear after the deci­mal (see “Setting
the Number of
Decimal Places”
on Page 5).

Memory Keys —
let you save, add
to, and subtract
from numbers in
memory (see
“Memory Calcula­tions” on Page 8).

+

/– — lets you
change a number
to positive or nega­tive (see “Using
the Special Func­tion Keys” on
Page 4).

-

A Look at Your Calculator

3

 Operation

TURNING ON THE CALCULATOR

Press ON/AC to turn on the calculator.
The calculator automatically turns off
after about 9 minutes if you do not
press any key.

Note: The calculator clears all previ­ous entries when it turns off.

USING THE SPECIAL FUNCTION KEYS

+

Press
number from positive to negative or
from negative to positive.

Press to delete the last digit en­tered (for example, when you press
the wrong number key).

Press 00 to enter two zeros at once.

to change the displayed

/–

CLEARING ENTRIES

To clear an incorrect entry and contin­ue the current calculation, press CE
once (0. appears), then enter the
correct value and continue your cal
culation.

To clear the display and begin a new
calculation, press
pears), then begin the new calcula­tion.

ON/AC (0. ap-

-

To clear an incorrect operator key (+,

–, ×, ÷) entry during a calculation, sim-

ply press the correct operator key and
continue your calculation.

ROUNDING

5/4 .determines how the calculator
rounds numbers to the right of a deci­mal point (depending on the F 0 2 3 4

setting — see “Setting the Number

A

of Decimal Places”).

rounds off the rightmost digit of the
calculation result to the next highest
number.

5/4 rounds off the rightmost digit of a

calculation result to the next highest
number if the next digit is 5 or more.
Rounds off to the next lowest number
if the next digit is 4 or less.

rounds off the rightmost digit of the
calculation result to the next lowest
number.

SETTING THE NUMBER OF DECIMAL PLACES

F 0 2 3 4 A lets you set how many

numbers appear to the right of the
decimal point in the displayed result.

With the switch set to A, the calculator
automatically inserts a decimal point

4

Operation