Calculators

A calculator is used to find mathematical equation that are very difficult. Calculators also help to make life easier with the use of technology.

You can use it to figure out many things. One example would be to figure out how much a sale item will save you. Say your item is $25 but is on sale for 5 percent off. take 25 and minus 5 then hit the percent key. Another example would be for sales tax. If your tax is 5 percent and your buying something for $25 take the 25 and times it by 5 and hit the percent key. That will tell you how much to add to the $25

Blaise Pascal is often credited with invented the first calculator type machine around 1641. For more info see the following website: http://inventors.about.com/library/inventors/blpascal.htm Although a slide rule which is a more primative type of calculating machine was invented by a guy named W. Oughtred in 1632.

That depends on what kind of calculator you have. 3.75 million would be 3750000. But on a scientific calculator you could also enter it as 3.75[EE]06 which is the same as 3.75*10^6.

Usually via an iterative solution that calculates the square of a value and correcting it until a close enough answer is found. This is called successive approximation.

Another method that might be used and gives an exact answer if carried out far enough is similar to long division in operation (but I don't think any calculators actually use this).

In 1957, IBM released the first commercial all-transistor calculator named IBM 608.

The history of the calculator begins with the abacus was a sort of hand operated mechanical calculator using beads on rods. It was first used by Sumerians and Egyptians around 2000 BC.

1982

quien fue el padre de la calculadora

It doesn't, it shows it as a decimal

The Pol function converts rectangular coordinates to polar coordinates

1-laptop is smaller than computer.

2-laptop can be easily drawn from one place to another.laptop can be easy use,

And 3 - the laptop is all-in-one, whereas a PC consists of several separate components. ("drawn" should read "carried").

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To get the inverse log function, press 2ND and then choose 10x. (Above LOG.)

To get the inverse of a natural log function, press 2ND and then choose ex. (Above LN.)

When estimating percentages mentally, I usually don't worry about accuracy.

As I practice mentally more and more, I get closer to the exact number.

(...science tells that accuracy depends on the measurement tool on hand: in this case, our brain). Or, if today I'm lazy to think, I just use a calculator, or fingers to count. It doesn't matter...

The key here is to first get the difference between the two numbers (DELTA).

...and to CORRECTLY report the percentage change.

The percentage change is RELATIVE to the moment being analysed.

Here are 3 examples:

1) If gas price increases from $1.50 to $2.00, then

the percentage represents 33% (0.50/1.50 = 0.33)

(the percentage change, or growth, is relative to the FIRST number)

2) If gas price has increased from $1.50 to $2.00, then

it is NOW 25% more expensive (0.50/2.00 = 0.25) than before.

(It means, if you'd like to tell how much higher percentually now you've became, you'll have to divide the DELTA from the LAST number)

3) And like the previous example:

If you buy a merchandise at $7, and sell at $8, then your percentual gross margin is 12.5%. ($8-$7)/$8.

Whether you are in dire need of a new vehicle to drive or if you simply would like to spoil yourself with a new vehicle, you are probably thinking more about the vehicle that you want than how much it will cost you every month. However, it is important for you to think ahead and calculate car payment before you get yourself into a financial disaster. Eventually, the new will wear off after you get your new car, and you will be stuck making monthly payments on your vehicle for several years to come -- in fact, you might pay on your car for seven years or more, depending on your loan.

Therefore, it is important for you to calculate car payment before you choose the car that you want. This will help ensure that you are able to afford the car that you choose before you actually choose it and bring it home; this can help ensure that you don't lose your vehicle in the future, and it can also help you live a more comfortable lifestyle since you won't have to spend all of your money on a car payment every month.

If you are wondering how to calculate car payment, you should know that there are actually several ways to do it. One of the easiest ways to do so is to use an online website that allows you to calculate car payment. There are plenty of online resources that can be used for this purpose; for instance, you can find a calculator that will allow you to find out how much your car payment will be based on the amount of the loan, the amount of your down payment, how long you spread your payments out for and what your interest rate is. You can also use a calculator to find out how much a bank will allow you to borrow based on your income and debt ratio. These calculators can be very helpful when it comes to choosing a car that you will be qualified to purchase and that will fit into your budget.

You can also use your calculator to determine some of this information, or you can ask your local car salesman a few questions about your payments, but using an online calculator is one of the quickest and easiest ways to get a ballpark estimate for a car loan.

scientific calculators

The main disadvantage is that in may cases the level of precision is limited to three significant figures.

Hewlett-Packard makes a wide variety of calculator products. They are advertised for use, for example, by high school students, math students, accountants, and everyday, ordinary users.

abacus

Casio made the first graphing calculator in 1985.

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just information i believe there is no specific name...