Report on Calculator

8/10/2019 Report on Calculator

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Short History



A calculator is a device that can be used to

make many different types of mathematicalcalculations, so there are many differenttypes of calculators to handle the differentfunctions.

The designs and sizes of calculators varybased on what they are to be used for. Somecalculators are designed for specificpurposes, such as different trades or

businesses, while others can be used justfor basic mathematical calculations, likeaddition and multiplication.







The most basic kind of electronic calculator

today is the pocket calculator, which in its

simplest form can be solar powered and

used to do most standard math problems.

Scientific and graphing calculators are

much more advanced than more

simple calculators, and they are usedprimarily in the areas of science,

mathematics, engineering and physics.



In the modern world, some pocket

calculators are now so powerful that

they are really computers in their own.

Many come with powerful

programming capabilities andgraphics.



Scientific calculators offer, in addition

to the basic arithmetic operations,

transcendental functions such assines, logarithms and powers.

These functions are computed as

required by the calculator using series

expansions.









Financial calculators are designed for

people working with money, particularly

those making investment decisions over

long periods where the time value of

money becomes significant.







Care should be taken in selecting the

scientific calculator to fit your needs.



The calculator you choose

must have more than the

basic functions.

You will be performing

operations beyond

addition, subtraction,multiplication and division.



Many of the functions are only

available when the correct

MODE KEY is selected.

Some of the function keys

are usually blue or yellow

keys marked [ 2nd ] and [3rd ] depending on the

model of your calculator.



Inverse

Trigonometric

functions

Trigonometric

functions

Degree and

Radian mode

Pi [ ].

Change sign



Logarithms

Last Answer

MemoryPercent

Inputs Fractions

Factorials

Time

calculation





The exponential

function will vary

between scientific

calculators.

The exponential key allows

you to enter values that

have a power of ten

associated with them.

The

exponent

Some have an

[ENG] key



The exponential function is not to be confused with the exponent function

of raising a value to a power .The most common

is of course the

square key, [ x2 ].

When you enter a value and

press the [ x2 ] key you calculate

the square of the value.

Like the square key, [ x2 ], a key

marked [ xy ] allows you to

calculate values raised to a

power above 2.



The square root key , calculates the square root of a

value

In some calculators

you must enter the

value first,

then press the

key.

x

x

Recall that x½ = x







This function finds the number ofthe different possible ordering in

selecting r objects from a set of n

objects.

For example:

In how many different ways

may four newly admitted patients

be assigned to four available beds

in the hospital?

Solution: nPr = 24

4(nPr)4 = 24



This function finds the number ofselecting r objects from a set of n

objects.

For example:Find the number of

combinations when 5 pieces of

flowers are to be given to 5 girls.

Solution: nCr = N

5(nCr)5 = 1





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