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# What are the different types of number systems available in scientific calculator?

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# Is scientific calculator is an embedded system?

Yes, the scientific calculator is an example of an embedded system. In fact, an electronic calculator was one of the first applications of an embedded microcontroller. I…t is considered an embedded system because in addition to calculating answers, it is also handling low level functions such as input from the keypad and output to the LCD screen. (MORE)

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# What are different types of computers available?

Machical like Babbages Difference Engines 1 and 2 and then his steampunk analytical engine. Analogue Computers, Electronic Computers, Mainframe Computers, Super Computers, App…le Computers, Microsoft computers, Unix, Linux and solaris Computers , Atari, Amstrad, IBM, ZX Spectrum, Commadore 64, psion , Tablet computers, PDA's, Laptop Computers, Sony, Toshiba, HP, Packard Bell, AJP, Advent, Acer, Samsung, Netbooks, Ipad, iPod touch, and Iphone. And Servers are kind of a computers. (MORE)

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In Computers

# Are there different types of software available?

Computer software is a collection of programs which is placed in consumers computers. These consist of; programs include; data, writing tools, font functions, photo suites, ad…dress book, media player. Some of these you can choose when purchasing a new computer and some can be removed (but some cannot) In contrast to computer hardware which cannot be touched. If, you did computer wouldn't run properly. Application software this type is removable and can be added to a user's computer using a CD or online download. These can be purchased at any computer store like; Best Buys, Fry's, Office Max, Office Depot. There is hundreds of application software which include; photo editing, office, writing tools, education, banking, forms, business suites, virtual music, video games, computer games and much more. (MORE)

In Visual Basic

# Computer Number Systems

If you are going to start coding in Visual Basic, or any other computer language, you will need to know the basics. One of the most basic things to understand is how a compute…r handles numbers. While there are many different computer number systems, and many types of data, in reality a computer will only understand binary. The other number systems are used to represent binary values in a way that human users can more easily understand and work with.It is important to understand that, no matter how a number is represented, the value of the number remains the same. For example, the number 10 will always be the same, no matter if it is represented in binary, decimal, or hexadecimal form. Computers only work in binary, which is a number system that uses only zeros and ones (0 and 1). Other number systems have been designed for the benefit of human users who will find it easier to read and type in formats other than binary. Knowing which number system is being used in a piece of code is important in order to avoid confusion.Binary is the number system that computers understand. It is base 2, which means it uses only 0 and 1 to represent any number. The binary representation of a number can sometimes be quite long, and it can be difficult to quickly determine what the number is. Binary counting works in the same way as decimal counting, but each digit caps at 1, meaning that when you increment a number by 1, a 1 digit is reset to 0 and the next number to the left is incremented instead. Here are the numbers 0 through 9 expressed in binary: 0000, 0001, 0010, 0011, 0100, 0101, 0111, 1000, 1001.Octal is a base 8 numbering system. This means it uses the values 0 through 7 to express any number. Working with octal numbers is useful when programming, as it is easier to convert base 8 to binary (base 2), than it is to convert decimal values to binary. Whenever a digit that is a 7 is incremented by 1, it resets to 0, and the next digit to the left is incremented by 1 instead. Octal produces shorter representations of longer numbers than binary. Here are the numbers 0 through 9 expressed in octal: 0, 1, 2, 3, 4, 5, 6, 7, 10, 11.Decimal is the numbering system that most people are fluent in. It is a base 10 numbering system, meaning that it uses the digits 0 through 9 to represent any number. Whenever a digit that is a 9 is incremented by 1, it resets to 0, and the next digit to the left is incremented by 1 instead. Decimal numbers are harder to convert into binary. However, it is an easy number system for human to understand as humans have 10 fingers, and most things are calculated in base 10.Hexadecimal is one of the most complex numbering systems to understand. It is base 16. As there are only 10 digits (0-9), hexadecimal also makes use of the letters A through F. F represents 15, so when an F digit is incremented by 1, it resets to 0, and the next number to the left is incremented instead. The numbers 0 through 16 in hexadecimal look like this: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F, 10.If you want to start programming, you will first need to learn the basics. One of the first things to learn is how computers handle numbers. There are several different number systems you will need to learn, including binary, octal, and hexadecimal. However, computers only understand binary, which is a number system that uses combinations of 0 and 1 to represent any number.It is important to understand that, no matter how a number is represented, the value of the number remains the same. For example, the number 10 will always be the same, no matter if it is represented in binary, decimal, or hexadecimal form. Computers only work in binary, which is a number system that uses only zeros and ones (0 and 1). (MORE)

# Basics of the Four-Function Calculator

In chemistry basics, you will probably be required to use a calculator for some of the calculations you will need to perform. Many students of chemistry have several calculato…rs for different uses. This provides them with the option of having a device that performs many functions, as opposed to a few. The following is a briefing of the four-function calculator and its possible use in chemistry.A four-function calculator completes the basic math functions. These are adding, subtracting, multiplying, and dividing. There are calculators of this type on nearly every technical device used today, such as cell phones and computers. Computer programs have a function that allows you to toggle between more advanced calculating systems and the basic ones.This type of calculator employs the use of a regular number keypad with symbol buttons for addition, subtraction, multiplication, division, and equals or total. It will also have a period for the decimal point. It does not have to be small because of its restricted nature. Some calculators of this type are made pocketsize or small enough to attach to a keychain. Others are large enough to sit on a desktop with large buttons for easier seeing and pressing.As it is simple and basic, this calculator can be easily used by someone who does not need additional buttons and functions to get answers to their math questions. It is easily found in any convenience, department, and even grocery store. Someone with very little knowledge in math can use this calculator without issue. In addition, they are inexpensive and can be purchased in a variety of sizes and quality.The fact that a four-function calculator performs the basic four functions of math can be a good and a bad thing. If you are in need of help with more detailed calculations, you will not be able to use this calculator. For simple parts of a longer equation that is written down, it will come in handy. However, for any type of chemistry or geometrical equations, you will need to find a more detailed calculator.The four-function calculator provides the four basic math functions. These are addition, subtraction, multiplication, and division. Many software programs and modern technological devices have them already installed. For simple math functions, or advanced functions broken down into simple ones, a four-function calculator can be used. Anything that cannot be broken down and requires additional functions would call for a scientific calculator.Calculating devices have been around for centuries. It was not until the 1960s that the first electronic calculator was sold in the United States. In the 1970s, calculating systems were built into the computer programs of the day. In the mid-1980's, nearly half the nation used hand-held calculators on a regular basis for their computing needs. This number is less than one percent of the nation now. (MORE)

In Products

# Common Types of Residential Heating Systems

Familiarity with heating system types is essential if you are a homeowner or are looking to construct a new home. Knowing what kind of heating system type works best in your h…ome helps you make the right choice when purchasing a new or replacement heating system. Additionally, understanding your heating system helps you save money when little things go wrong. Below are the most common types of heating systems for residential applications.Forced-air heating systems are by far the most common in residential homes. In a forced-air system, a gas or oil-powered furnace heats the air. A blower then pushes the heated air through a system of ductwork that runs under the floors of your house. Forced-air systems are extremely versatile because they allow you to filter, dehumidify and humidify your air, as well as add an air conditioning system to the existing ductwork.A traditional, or hydronic, radiant heat system works with hot water that circulates throughout pipes built into your house. These pipes usually run throughout the floors, but also run through walls and through freestanding radiators. A boiler that uses wood, gas, oil or electricity heats the water. There are also newer styles of radiant heat that warm your home through electric panels underneath the floor.Electric baseboard heating is among one of the most expensive options for a home, but it is still commonly in use. Each room in the house has one or more electric heating units along the floor. Each unit contains an electric heating element that has pipe around it and aluminum fins that transfer heat. The air in the unit heats up, rises to the top of the room and new, cold air moves into the baseboard heater for heating.While you do not see wood and pellet stoves in the city, they are extremely popular in rural areas. Wood or pellet stoves are either freestanding or built into the structure of your home. The operation of a wood or pellet stove is simple. You add biomass to the stove, such as wood or wood pellets, and light it on fire. Heat radiates off the stove and the fire itself, and the exhaust exits out of a chimney. Newer freestanding stoves also include catalytic converters to cut down on emissions and blowers that distribute heat around your home.Whether you are looking for a new heating system or just want to know how the one you own operates, understanding heating system types comes in handy. Each type of heating system has advantages and disadvantages, but all of these types are perfectly acceptable for residential use.Solar and geothermal heating systems require special design features that affect their efficiency. Some homes benefit from retrofit equipment, but major renovations often make them cost-prohibitive. (MORE)

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# Common Types of Heating Systems

If you live in a cold climate, heating your home in the winter is an important affair. Thankfully, over the years, a variety of heating systems and types have been developed f…or the consumer market. All of the different systems have their own pros and cons, and you should carefully consider all of the available options before deciding which heating system to install.The most common type of home heating, your furnace or heat pump provides forced air heating. Typically powered from a unit in the basement, attic or crawlspace, a forced air unit heats a volume of air before blowing it into the remainder of your home. While not the most efficient means of heating your home, forced air heating provides you with the greatest comfort.Radiant heat panels are mounted on the walls or ceiling of your home. When turned on, they create infrared radiation that warm objects in the device's line of sight. While a very efficient method of heating a small area or object, radiant heating does not actually warm the air itself.Oil or water radiators have long been used in apartments and commercial buildings. Essentially, your oil or water filled radiator heats up, heats the air around it, and establishes a convection current which slowly and evenly warms the room. Unfortunately, these heaters can be very hot to the touch and have generally fallen out of favor.Burning wood for heat is the oldest method known to man, and is still used today in the northern latitudes. If you have a wood burning stove, a fire is created in a steel or iron oven, and the resulting hot air is piped throughout the house. Though labor intensive to operate, wood burning stoves are an excellent choice if you live in a in very cold climate.Think about your local climate and lifestyle before choosing to install a new heating system or replace your current heating system. Think about the long term costs, the amount of effort you have to put in to maintaining the system and, most importantly, the amount of heat generated by each of the various heating systems. Heating your home is one of the most expensive parts of home ownership, so it makes sense to choose the best fit for your home.When looking for different types of heating systems, consider how much costs for the heating system to be professionally installed. (MORE)

# Pascal and the Mechanical Counting Machine

The abacus, a frame with colored beads on organizational bars, was, strictly speaking, the first calculation device. Who invented the modern calculator, though? It's a difficu…lt question to answer. The device's electronic incarnation is often presumed to be its first, but that isn't strictly true, either. Many consider Blaise Pascal to be the inventor of the first mechanical calculation device. Here is a look at the man and his invention.Pascal was born in Clermont-Ferrand in 1623. His father, Etienne, was a scientific-minded local judge, while his mother died young. The young Pascal was primarily influenced by his father and older sisters. He was an inquisitive and precocious child. He often drove his teachers to frustration with his ceaseless questioning.Pascal created his Pascaline, or mechanical calculator, at the age of 21. The boxy machine used a system of gears, numbered discs, and wheels to conduct calculations. It could add and subtract mechanically. It could divide or multiply only through labor-intensive repetition. It is considered one of the most important devices in Renaissance mathematics.The mathematical community received Pascal's device with enthusiasm. They hailed him as the man who invented the calculator, a true pioneer of thought. The device changed the face of mathematics throughout Europe. It allowed for much more rapid work on complex equations. It also helped to open the field to those less comfortable with the laborious calculations of the day.In 1646, Pascal experienced a mystical dream in which God told him to dedicate his life to Christ. He abandoned his scientific work. Pascal and his sister became identified with the Jansenist sect of Catholicism. These hardline believers were extremely critical of science in general. Pascal's career was over before it had really begun.Pascal's health was frail from an early age. He developed severe respiratory problems after his 18th birthday. He died in 1662, barely 39 years of age. The loss of Pascal was a serious blow to the scientific community. He was mourned as far away as the Arab world where his device had been a significant part in the mathematical revolutions of the 1600s.For the man who invented the calculator, life was unkind and short. Pascal died before he had a chance to build on his ideas, and his religious conversion quashed much of his enthusiastic pursuit of scientific advancement. His life as an inventor was a sad glimpse of wonder followed by a swift collapse.The Sumerians invented the abacus in 2700 BC. They used cuneiform beads on wooden poles in counting frames. These abacuses were used to keep track of grain shipments and warehouse storage. (MORE)

In Definitions

# What CAS Numbers Are and Why They Are Important

If you are studying chemistry, you will run across CAS numbers repeatedly. Knowing what they are and why they are important is useful to anyone interested in Chemistry, no mat…ter what your level of interest is. A CAS number is assigned to every chemical that is described in scientific literature, including alloys, coordination compounds, elements, isotopes, inorganic compounds, ions, metals, minerals, nuclear particles, organic compounds, organometallics, polymers, proteins, nucleic acids, and materials of biological origin, unknown origin, or variable composition. This overview provides a basic understanding of CAS numbers.A CAS numer is a unique identifier, assigned to all the chemicals described in open scientific literature, by the Chemical Abstracts Service, which is a function of the American Chemical Society. The Chemical Abstracts Service maintains a registry of over 71 million substances, both organic and inorganic, and over 64 million DNA sequences and proteins. It adds approximately 15,000 new substances daily to the registry, along with information about each substance.A CAS number has no inherent meaning, but is assigned in ascending, sequential order. It is written in three parts, separated by hyphens. The first section can be up to seven numbers in length, the second section has two numbers, while the third has only one number, which is significant because it serves as a checksum digit. The CAS number of helium, for example, is 7440-59-7. The check digit is determined by reversing the sequence of the numbers from the first two sections, and multiplying them by an increasing number, starting with 1, then adding all the products up and computing the sum modulo 10. So in the helium example, you would calculate the check digit as follows: {(9x1)+(5x2)+(0x3)+(4x4)+(4x5)+(7x6)}= 97 mod 10 = 7.Because CAS numbers are unique, they are assigned in ascending, sequential order. There are, however, specific cases where a different method is used. There are cases where a whole class of molecules will receive a single CAS number. For example, alcohol dehydrogenases, which is a group of enzymes, has one CAS number which is 9031-72-5. Also, a standardized mixture of compounds may receive what is called a "corporate" CAS number. Mustard oil, for example, has a CAS number of 8007-40-7.There are numerous ways to describe a given substance, such as the generic name, the molecular formula, the proprietary, the trade name, the structure diagram, the systematic name, or a trivial name. Because CAS numbers are unique, however, they can be validated easily, and have become the standard method for identifying substances by governments the world over.If you need a unique identifier for a substance, the best place to look is the CAS Registry. This registry is updated on a daily basis, and is the most comprehensive database on substances that are described in scientific literature. It is the standard referred to by regulators, health and other governmental agencies, because it is the most complete collection of data on substances. In addition to CAS publications, you can find CAS numbers in governmental regulatory agency commercial chemical inventories, a selection of Elsevier databases, and a number of chemical catalogs, handbooks, guides, and technical reports.According to the CAS website, the major value of CAS numbers is that they do not have any ties to, nor are they dependent on, any system of chemical nomenclature. Because of this, they can serve as an international resource for chemical substance identifiers, used in science, industry, and by regulatory bodies. CAS Registry numbers can be found in several places online, but the final authority for them is the CAS Registry, which does provide a "lookup service" with a 24-hour turnaround time. (MORE)

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# What is the difference between a calculator and a scientific calculator?

a calculator adds, subtracts, multiplies and divides numbers and numbers with decimals. it stores single numbers to memory, solves percentages, and square roots. a …scientific calculator does a little more than a calculator. it includes the Greek letter or the numeral pi, finds exponents, roots, plots data, contains the trigonometric symbols sin, cos, and tan, and the logarithmic symbols ln, log, X^10 and X^e (MORE)

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# What is the difference between a scientific calculator and a graphing calculator?

A graphing calculator is a scientific calculator with a graphing display window. Otherwise, there are no limits to the type of calculations that can be made on either of them.… (MORE)

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# How do you find the cubed root of a number in a scientific calculator?

Raise this number in power of 1/3. For example, to find the cube root of 27, 27^(1/3) = 3. Don't forget to put the parentheses, because if you don't do this, you can fin…d a wrong answer. Without parentheses, as 27^1/3, the calculator will show you 9 as an answer, and this is a wrong answer. Try it. (MORE)