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You have been wondering whether or not you should take the plunge and go organic. Whatever you decide, there is some basic knowledge you should be aware of before buying your produce. What are the...
I’m a computer repairer and the most common problem I see other than viruses are people without enough ram/memory in their computers. Since it’s so simple to install new memory, adding more is...
Have you ever wondered what all those numbers and lines used to scan merchandise actually mean? Barcodes can be a bit frustrating and confusing if you don’t know what you’re looking at. These...
Sometimes having your mail delivered as fast as possible is a priority. This is evidenced by the fact that many people will pay extra money for express mail, just to get their mail to its...
After the advent of calculators and computers, many basics of Mathematics are not known to the students. One day I asked a student, “Can you tell me orally whether number 29439 is divisible by 2...
Numerology is a method of divination that seeks to understand people, places, and events by analyzing numbers associated with those people, places, and events. Though numerology is a...
As we all know pi is the ratio of the diameter of a circle divided by its diameter. The decimal is transcendental which means that it goes on forever, and never ends or repeats. So you could...
When I was a Senior in High School, in accounting class I was playing with my calculator instead of doing my homework and I stumbled onto this little short cut for figuring depreciation using...
The EAN-13 system is a bar code numbering system designed by the International Article Numbering Association (EAN). The EAN-13 system is similar to the ubiquitous UPC numbering system, except that...
Your PIN – short for Personal Identification Number – is the code to your debit or bank card that enables you to withdrawal cash from an ATM or pay for a purchase with your bank account, while...
Unix is an operating system, developed in the 1960s and 1970s, that is used to operate both servers and stand-alone workstations. Many advanced computer users prefer it over Windows due to its...
UNIX is a powerful operating system, but not quite as easy to use as Linux or Windows. If you need to set the time in UNIX, follow these steps to make sure you do it properly without disrupting...
Given any number, no matter how big, we show how to easily determine if it is divisible by 3 within seconds.
Has the time on your phone system gradually changed? It is easier than you think to reset the time and date on these phone systems.
Excel's TRUNC function truncates a number to a specified number of digits and returns the resulting number. It is important to distinguish TRUNC with INT and ROUND. TRUNC will return #VALUE! if...
There are some things in science that are genuinely complicated. There are others that are simple if you take the necessary time to really understand them. Significant figures in science fall into...
Excel's BIN2HEX function converts a binary number (base 2) to a hexadecimal number (base 16). Computer programming frequently utilizes this conversion because machine language is in binary but is...
Soundex is an algorithm used to phonetically convert a name to a code. It is often used for indexing names in vital records and other such databases, and is primarily used to convert last names....
What is 133,939,385? Does it look confusing? Is it just too much to take in? Large numbers can look overwhelming and just looking at them can confuse some people, but it shouldn't. It is nothing...
The beginning digit lets the machine know what system the credit card is using. Each system is assigned a number. A few common system number are: 3 for American Express, 4 for Visa, 5 for...
The almighty decimal point. Who would have thought that one little period could mean so much? Understanding its importance and how it affects place value really isn't too complicated. If, by...
Finding the real age of a tire is not easy. You must be able to locate the U.S. Department of Transportation number on the tire. It is so important for anyone who is buying tires to look at this...
The ISBN system is a worldwide standard for cataloging books in which each newly published book (or major revision of a previous book) receives its own unique identifying code. The ISBN code...
ISBN stands for International Standard Book Number. Nearly all published books, whether printed or e-books, have an ISBN--and sometimes even other items, such as DVDs and CDs, might also have an...
Knowing how to work with percentages and what they mean is not that hard. If you have credit cards, bank accounts, mortgages, or go to sales, you need to be able to figure percentages. Having a...
Universal Product Codes (UPC) are unique sets of numbers used to identify products. They are displayed in "barcode symbology" that is machine-readable. Consumers use them for such things as a...
Every car that is manufactured in the world has a VIN number or Vehicle Identification Number. To most the VIN is a group of numbers and letters that needs to be the same in all of the places that...
It's one of the classic complaints about technological appliances--the clock on the VCR that blinks 12:00 over and over again. It can be maddening if you let it go without setting it, and it also...
Reading the VIN (vehicle identification number) on your Chevy is the easy part. Determining the information from the VIN number is slightly more challenging, but still pretty easy once you've...
Since the year 2000, tire manufacturers have been placing date stamps onto their tires to determine the age of the tires. Truck tires are no different. Finding and reading the date stamp is...
Communication between England and the United States is always high volume, which is not surprising given our common roots and close economic ties. Making an international call to England is simple...
It's simple and not too expensive to make an international call to Mexico as long as you know the correct codes to dial and take care to call during off-peak hours or through a discount service...
Third or fourth grade is when most children learn how to tell when a number is divisible by another number. There are simple rules for checking if a number is divisible by 2, 3, 4, 5, 6, 8, 9,...
Multiplication and easy! Give me a break. That's the normal reaction from kids to youngster. Well, hold on! I can show you a simple way to simplify the multiplication by 11 and you will be able to...
If you want to check the age of the tires on your vehicle, or you'd like to know how old the tires you're about to purchase are, checking the age stamp is pretty easy. Tires older than 6 years are...
Although there are different ways to add a hit counter to a Web page, one of the most common approaches is done by using Microsoft FrontPage software. Microsoft FrontPage allows users to do almost...
A Vehicle Identification Number, or VIN, is not a random sequence of 16 digits. By examining the parts of a VIN, important information about the vehicle can be discovered.
IMSI stands for International Mobile Subscriber Identity and is used in the various generations of wireless mobile phone technology. It works as a unique number that identifies the particular...
You usually receive text files from other systems with dates in this form: 13012007 16022007 22032007 25042007 16022008 Here you will receive specific indications to manage this Excel...
As students are learning about division, they learn that some numbers are divisible by other numbers, while others have a remainder. There are divisibility rules that can help students figure out...
The hexadecimal system is a base-16 number system. It has the regular ten digits 0 through 9, plus the six letters A, B, C, D, E, and F. It is used to encode larger numbers because it is more...
Tire age is the most important factor to consider when buying new or used tires. Just because a tire is brand new does not ensure that it is safe to use on a vehicle. As tires age the rubber...
Back in old times before calculators were allowed in math and science classes, students had to do calculations long hand, with slide rules, or with charts. Children today still learn how to add,...
Rounding in mathematics refers to reducing digits in a number using certain rules. For instance, experimentally determined values always have a limited precision (e.g., in hundredth) and hence...
Calculating sums is one of the basic mathematical practices learned early on in the schooling of students around the world. Adding and subtracting integers can take many different forms, from...
Eastings and Northings are used in the United Kingdom's Ordnance Survey Maps. Translating the units into their numerical equivalents and using the difference between the Eastings and the...
Bar codes appear on a huge number of different products, anything from groceries to DVDs. They're the rectangular-shaped series of alternating black and white stripes located on the packaging. The...
Random number generators have many practical uses in the real world. They are used to generate random sequences of numbers for statistical experiments, physics and chemistry applications,...
We humans usually do math in the base-10 (or decimal) system, which has ten digits: 0 through 9. Computers, on the other hand, usually use the base-2 (or binary) system, which has only two digits:...
Aria guitars emerged on the music scene in 1958, with the first electric models appearing five years later. With such a large number of years in production, owners of Aria guitars often want to...
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