Sentry CA656 Manual

V SENTRY.
CA656
Scientific Calculator
Deer Customer.
= Thank you very much for purchasing our electronic calculator.
= To fully utilize its features no spacial training is required, but we suggest you
study this operation manual to become familiar with its many abilities.
- To help ensure its longevity do not touch the inside of the calculator, avoid hard
knocks and unduly strong key pressing. Extreme cold (BELOW 32° or 0°C),
heat (above 104°F or 40°C) and humidity may also affect the functions of the
calculator. Never use volatile fluid such as lacquer thinner, benzine, etc. when
cleaning the unit. FOR servicing, contact your retailer or nearby dealer,
Before starting calculation, be sure to press the [Onc] key and to confirm that
"O° is shown In the display.
Special care should be taken not to damage the unit by bending or dropping. For
example, do not carry It In your hip pocket.
MES THE KEYBOARD
'on
Os oy
© = (in) S
Om Ow @ğ
a Op
© Of
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EEE OPERATING CONTROLS ay
®© lore Powor off key
When this key is depressed, the calculator is tumed off.
Automatic Power-Off Function.{A,P.0.}
This calculator is automatically turned off approximately 8 minutes
after the last key operation to sava the batteries.
Power on and clear/etatistical calculation mode key
| Push this key to turn the calculator on. It is ready for operation.
When pushed during operation it clears the calculator except
tor the mamory,
Statistical program will be activated,
When the calculator Is set to the statistical calculation modo
through these keys the symbol" ETN "appears, and at the
same time the numerical values and calculation commands,
except for memory contents are cleared, Meanwhile, In the
Statistical calculation mode the |
» Rw and W)
keys work as tho [| X and wm) koys,respectivoly.
And pushing thase key
immediately aftar tho (še key they
work asthe Fx. (Es), G
. (3) and (Ep) keys. a
© (ana 2nd function designation key
© fen Degree/Radian/Grad selector/angular unit conversion key
Used for calculation of trigonomatric, Inverse trigonometric
and coordinate conversion. The (oma) key changes the angular
moda, a
m> DEG P RAD - P GRAD —
Ex. DEG ~ GRAD: Dopruss the Gea koy twice.
"DEG* modo- Entrias and answars aro in decimal degreas.
"RAO" mode- Entries and answers are in radians,
"GRAD mode- Entries ang answers are in grads.
z
(1009 =90 =)
it has the function of the Dan) key as woll as converting the
displayed number into a numbor of the spectified angular Moda.
Hyperbolic/archyperbollo key
Trigonomotric/inverse trigonmetric function koy
Display format exchange/Tabulstion key
: When a calculation result is displayedin the tloating decimal
point aystem, depressing the key displays the result In the scientific
natation system
Pushing the key once more displays the result in the floating
decimal point system again.
a TAR): «To sepalty the numbor of decimal digits in the calculation result.
Clear entry/Factorial key
CE}: Used to cloar an incorrectly ontered number.
123 Œ) 456 (CE 456 [=| = 679.
ma (MI: Calculates the factorial of the displayed number.
Factorial of n(nip = n* {m-1)* (n= 2) 291
Ole Degree/minute/second = Decimal degrees conversion/hexadectmal
number key
=æ) |
To convert degree/einutessscond to decimal degres
za and vice versa.
{0}; Hexadecimal number *D* key.
(effective only in hexadecimal number mode- HEX mode)
Go) os Natural logarithm/antiiogarithm and hexadecimalnumber key
a (in): Used to obtain the logarithm base è (6#2.718281828).
|: Calculates the antilogarithm basee of the displayed numb
x 4|
(Œ): HEX mode)
Hesadecimal number" E" key.
kA Common logarithm/antiiogariihm and hexadecimal number key
Toa): Used to obtain the logarithm with the base of 10.
S€) 10% : Calculates the antilogarithm with the baso of 10.
HEX mode)
Hosadecimal number * F* key.
(E) rie, Real number ontor/coordinate conversion key
a: © This is used when the real parts of complex numbers are
to be input and when identifying the real parts of calculation
results.
© This is used during coordinate conversions when the X
coordinate of the Rectangular coordinates (X, Y) le input or
when the-r of the polar coordinates (r,6) ts Input. it is also
used for identifying the calculated values of X or r.
j: Converts rectangular coordinate into polar coordinate.
® T ry number enter/ooordinate conversion key
E bi: © This is used when tho imaginary parts of complex numbers
ere to be Input and when identifying the imaginary parte ofthe
calculation results,
@ This is used during coordinate conversions when the Y
coordinate of the Rectangular coordinates (X, ¥) is Input or
when the @ of the polar coordinates {r, Ô) is input. It is also
used for identifying the calculated values of Y or 8.
[>]: Example Key in Dispiay_
a =} - 123,
45 ~ 12346.
® s xr 24 =) S) =~ 5. 00
3s —- 5, 38
(ea (Hs Used fo set tha complex number mode.
© TA Enter exponent/p! and hexadecimal number key
To enter number in scientific notation.
The constant Eò A =3.141592654) is entered.
HEX mode
Hexadecimal number *A* key.