Posts Tagged ‘Types’
Types of computers
Personal range in size and capability. At one end of the scale are supercomputers, very massive individualized with thousands of linked microprocessors that perform extremely complex calculations. At the other end are little individualized embedded in cars, TVs, stereo systems, calculators, and appliances. These individualized are built to perform a limited number of tasks.
The individualized computer, or PC, is designed to be used by one mortal at a time. This section describes the various kinds of individualized computers: desktops, laptops, handheld computers, and Tablet PCs.
Desktop computers
Desktop individualized are designed for use at a desk or table. They are typically larger and more powerful than other types of individualized computers. Desktop individualized are prefabricated up of separate components. The main component, called the system unit, is usually a rectangular case that sits on or underneath a desk. Other components, such as the monitor, mouse, and keyboard, connect to the system unit.
Desktop computer
Laptop individualized and small notebook PCs
Laptop individualized are lightweight mobile individualized with a thin screen. Laptops can operate on batteries, so you can take them anywhere. Unlike desktops, laptops combine the CPU, screen, and keyboard in a single case. The screen folds down onto the keyboard when not in use.
Small notebook individualized (often referred to asmini-notebooks), are small, inexpensive laptops that are designed to perform a limited number of tasks. They’re usually less powerful than a laptop, so they’re used mainly to browse the web and check e‑mail.
A laptop individualized and a small notebook PC
Smartphones
Smartphones are mobile phones that have some of the same capabilites as a computer. You can use a smartphone to make telephone calls, access the Internet, organize contact information, send e‑mail and text messages, play games, and take pictures. Smartphones usually have a keyboard and a massive screen.
Smartphone
Handheld computers
Handheld computers, also called individualized digital assistants (PDAs), are battery-powered individualized small enough to carry nearly anywhere. Even though not as powerful as desktops or laptops, handheld individualized are useful for scheduling appointments, storing addresses and phone numbers, and playing games. Some have more advanced capabilities, such as making telephone calls or accessing the Internet. Instead of keyboards, handheld individualized have touch screens that you use with your finger or a stylus (a pen-shaped pointing tool).
Handheld computer
Tablet PCs
Tablet individualized are mobile individualized that combine features of laptops and handheld computers. Like laptops, they’re powerful and have a built-in screen. Like handheld computers, they grant you to write notes or draw photos on the screen, usually with a paper pen instead of a stylus. They can also convert your handwriting into typed text. Some Tablet individualized are “convertibles” with a screen that swivels and unfolds to reveal a keyboard underneath.
Tablet PC
What can you do with computers?
In the workplace, many people use individualized to keep records, examine data, do research, and manage projects. At home, you can use individualized to find information, store photos and music, track finances, play games, and communicate with others—and those are just a few of the possibilities.
You can also use your individualized to connect to the Internet, a network that links individualized around the world. World wide web access is acquirable for a monthly fee in most urban areas, and increasingly, in less populated areas. With World wide web access, you can communicate with people all over the world and find a vast amount of information.
Here are some of the most favourite things to do with computers:
The web
The World Wide Web (usually called the web, or web) is a gigantic storehouse of information. The web is the most favourite part of the Internet, partly because it displays most information in a visually appealing format. Headlines, text, and photos can be combined on a single webpage—much like a page in a magazine—along with sounds and animation. A website is a collection of interconnected webpages. The web contains millions of websites and billions of webpages.
Example of a webpage (Microsoft Game Studios)
Surfing the web means exploring it. You can find information on the web about nearly any topic imaginable. For example, you can read news stories and motion picture reviews, check airline schedules, see street maps, get the weather forecast for your city, or research a health condition. Most companies, agencies, museums, and libraries have websites with information about their products, services, or collections. Reference sources, such as dictionaries and encyclopedias, are also widely available.
The web is also a shopper’s delight. You can browse and purchase products—books, music, toys, clothing, electronics, and much more—at the websites of major retailers. You can also purchase and sell used items through websites that use auction-style bidding.
E‑mail
E‑mail (short for electronic mail) is a convenient way to communicate with others. When you send an e‑mail message, it arrives nearly instantly in the recipient’s e‑mail inbox. You can send e‑mail to many people simultaneously, and you can save, print, and forward e‑mail to others. You can send nearly any type of file in an e‑mail message, including documents, pictures, and music files. And with e‑mail, you don’t need a postage stamp!
More Computer Articles
Using a process called modulation; a modem transforms the computer’s digital signals into analog tones that can be conveyed through the telephone system. On the receiving end, the process used is demodulation, in which the other modem transforms this signal from analog back to digital. Modems can play both roles, modulation and demodulation, which is where the study modems, comes from: It’s short fro modulator/demodulator.
Two types of modems are available: internal and external. An internal modem is designed to fit in one of your computer’s expansion slots. It gets its power from the computer’s expansion bus. An external modem has its own case and power supply. For this reason external modems are slightly more expensive.
Asynchronous Communication
Modems use a method of networking called asynchronous communication. In this method, data is sent one bit at a time, in a series (one after the other). So that the receiving personal can tell where one byte ends and the next one begins, begin bits and stop bits are added to the data. This networking method is called asynchronous because the begin and stop bits eliminate the need for some kind of synchronization signal. In synchronous communication, data exchange requires a synchronization signal that identifies the units of data being exchanged.
Modulation Protocols
To establish communications, modems must conform to standards called modulation protocols. These protocols, set by international standards organizations, ensure that your modem can communicate with another modem, even if the second modem was prefabricated by a different manufacturer.
Several modulation protocols are in common use. Each prescript specifies all the necessary details of communication, including the data transfer rate. This is the rate by which the two modems can exchange data. The rate is measured in bits per second (bps). You might encounter the term baud rate when a modem’s data transfer rate is discussed, but the technical definitions of baud rate and bps rate differ. The correct measurement of a modem’s data transfer rate is the bps rate. The baud rate is the maximum number of changes that can occur per second in the electrical say of a communications circuit.
Modem protocols are governed by the International Telecommunications Union (ITU). The most current modulation protocol, called V.90, enables modems to communicate at a maximum rate of 56 Kbps. (In practice, V.90 modems rarely achieve speeds higher than 42 Kbps.) The prescript also includes standards for data compression and error checking. The previous protocol, V.34, enables a rate of 28800 bits per second. An early standard, V.32 bis, established a rate of 14400 bps. Standards before V.32 regulated communication at 9600, 2400, 1200, and 300 bps.
Two modems can communicate only if both follow the same modulation protocol. If your modem follows the V.34 protocol, your modem can't communicate at 28800 bps unless the modem on the other end observes the same protocol. Most modems, however, can start back to a lower rate. When a modem attempts to establish a connection, it automatically negotiates with the modem on the other end. The two modems try to establish which protocols they share, and then they use the fastest rate that both modems have. If a personal with a 9600 bps modem is connected to a personal with a 14400 bps modem, data is transferred between the two personal at 9600 bps.
Fax
Facsimile transmission – or Fax, as it is popularly known – enables you to send an image of a document over the telephone lines to anyone who has a fax machine. The sending fax organisation makes a digital image of the document. Using a built-in modem, the sending fax organisation converts the image to an analog representation so that it can be transmitted through the analog telephone system. The receiving fax organisation converts the analog signals to digital signals, converts the digital signals to an image of the document and prints that image. Fax usage didn’t take off until the ITU established modulation prescript standards for copier transmission. These standards differ from modem protocols. Fax protocols govern transmission at 9.6 Kbps (V.29) and 14.4 Kbps (V.17).
Some modems, called fax modems support fax as well as data modulation protocols. If your personal has a fax modem, you can send and receive faxes from your personal instead of a fax machine. However, you’ll need a scanner too if you want to fax something that’s printed or sketched on paper.
Find more Data Synchronization articles from search form.
Affiliate marketing programs has never been as favourite before as it is today. Why? There can be a number of reasons. The most probable reason, however, could be the fact that the benefits of affiliate marketing have become clearer to a lot of people now than they were before.
Today, both the merchants and the affiliates can see clearly that affiliate marketing can work for both of them. The merchant sees affiliate marketing this day as the chance to advertise their products at a lower cost. The affiliates, on the other hand, sees affiliate marketing as an simple way of earning profits online by doing what they like most, and that is by creating websites.
Just as the popularity of affiliate marketing has shifted into greater heights, so has the people’s outlook about it changed. No longer is affiliate marketing considered this day as an substitute method for the merchant to advertise his products, or as a source of additional income for the affiliates. For merchants and affiliates alike, affiliate marketing is now considered as a main source of profits and revenues.
So the question now is what type of affiliate marketing will work ideal for you? Are all affiliate marketing programs the same? Are the benefits the same? Or are there affiliate marketing programs that work superior than the others?
There are actually different types or classes of affiliate marketing, and the number of types will depend on how one will classify them. The most basic affiliate marketing programs, however, falls under two categories: pay-per-click (PPC), and pay-per-performance (PPP).
• Pay Per Click (PPC)
PPC is the most favourite type of affiliate marketing for affiliates with small websites, and probably the easiest way for them to acquire money. In this affiliate marketing type, the merchant pays his affiliate whenever a visitor is referred to his site, that is whenever someone clicks through the merchant’s flag or text ads. The affiliate gets paid a certain amount even if the visitor he referred does not buy anything from the merchant’s site. However, typical fees for PPC affiliate programs are small, usually not exceeding a dollar for apiece click.
• Pay Per Performance (PPP)
PPP affiliate marketing is the most favourite among merchant and is also the most lucrative type for the affiliates. In this type of affiliate program, the merchant only pays the affiliate whenever his referral translates into an action—that is whenever the visitor he has referred actually buys something from the merchant’s site or when the visitor becomes a lead. This means a lot of savings for the merchant. On the other hand, it becomes the most lucrative type for the dedicated affiliate, for commissions in PPP affiliate marketing usually comes in the range of 15% to 20% of the actual product sales.
Pay-per-performance affiliate marketing can be further classified into two favourite types: pay-per-sales (PPS) and pay-per-lead (PPL).
o Pay Per Sale (PPS)
In a pay-per-sale type of affiliate marketing, the merchants pay the affiliate a certain fee whenever the visitor he has referred to the merchant’s site actually buys something from the merchant’s site. Affiliates are often paid on commission basis, even though other merchants would opt to pay a fixed fee. But no matter what the basis of the fee is, it is generally higher than the fee paid to affiliates in a pay-per-click affiliate program.
o Pay Per Lead (PPL)
The pay-per-lead type of affiliate marketing is a slight variation of the PPS type and is often used by insurance and finance companies and other companies who rely on leads for their company to grow. In this type of affiliate marketing, the affiliate is paid whenever the visitor he referred to the merchant’s site fills up an application form or any similar form related to the business of the company. Compensation for this type of affiliate marketing is based on a fixed fee whose rates approximate that of the fixed fee in the PPS type.
Aside from these three specific types of affiliate marketing, a lot of other affiliate marketing types exist. If the classification is based on the depth of the affiliate network, it can be classified as single-tier, two-tier, and multi-tier affiliate marketing. There is also another type of affiliate marketing that pays the affiliate apiece time the customer he has referred buys something from the merchant’s site.
• Single-Tier, Two-Tier, and Multi-Tier Affiliate Marketing
These types of affiliate marketing are based on the different levels or tiers in the affiliate network by which payments are made. In a single-tier affiliate marketing program, the affiliates are only paid based on the direct income or traffic he has referred to the merchant. All the previously mentioned affiliate marketing types (i.e. PPS
• In two-tier affiliate marketing programs, the affiliate is not only paid for the direct traffic or income that he refers to the merchant’s site, but also on apiece traffic or income referred by various other affiliates who joined the affiliate program through his recommendation. Multi-tier affiliate marketing works the same way, even though the affiliate gets additional commission for a wider number of affiliates in different tiers in the affiliate network.
• Residual Income Affiliate Marketing
In residual income affiliate marketing, the affiliate gets paid not only once for apiece customer he has referred to the merchant’s site. Rather, the affiliate is also paid whenever the customer he has referred returns to the site and buy another product. Compensation for such type of affiliate marketing is based on either income percentage commission or fixed fee basis.
The different affiliate marketing types would virtually work differently for merchants and affiliates alike, and apiece would generally have their own list of benefits. Which type of affiliate marketing will work ideal for you? It is not really for me to tell. Rather, it is for you to select which type of affiliate marketing program will suit your needs and characteristics best.
Find more Why Marketing articles from search form.
Database Table Data Types
Database Essentials – Part 3
Division 1
Introduction
This is part 3 of my series, Database Essentials. Database Essentials is division 1 of a set of tutorials I have on Database. Data Types also known as Data Domains refers to the kind of data that goes into a column of a table. In this part of the series we look at database Data Types. If the values of a column are whole numbers then the data type of that column is integer. If the values of a column are strings then the data type for that column is text. There are other data types; we look at them in this part of the series.
Byte and Kilo
The length of a message is measured in bytes. One byte is one character. Kilo short K in personal software is 2 raise to the power 10.
Implementation
After designing the tables for a database, you need to code it (implement it) in a database management system. There are many DBMS. They come in different software packages such as Microsoft Access, Oracle, MSSQL, MySQL, Sybase, etc. The data types I describe to you in this tutorial are those of Microsoft Access. Those for the other packages are similar. When you are creating a plateau in a DBMS you have to specify the data type for apiece column in the table.
Text
This refers to phrase composed of letters and/numbers. This data type can be used for an address column for example. It can also be used for a column that has numbers that do not require calculations. Examples of sets of numbers that are not used for calculation are phone numbers and postal code. If you have a column in a plateau for phone numbers or postal code, its data type should be text. An example of a set of numbers that is used in calculation is money figures. The maximum size of the text data type is 255 bytes. So, if you declare a column as having a data type of text, none of its cell content should be longer than 255 bytes.
Memo
This data type is used for lengthy text (which might include numbers). You can use this data type for columns that have notes or descriptions. The maximum size for this data type is 64,000 characters.
Integer
This is a whole number data type. You use this data type for a column that has whole numbers. If you have a drinking bar for example, you might be interested in the number of bottles of drinks purchased apiece day. You might have a database table, which has a column with the name, noOfDrinks; apiece row in such a plateau can represent a day’s information. So apiece plateau cell for the noOfDrinks column will have a whole number, for number of drinks sold on a day. An integer can be up to 2 bytes long.
Floating
The integer data type takes only whole numbers. A whole number does not have a fractional part. If you would use numbers with fractional parts then you need the Floating data type. The floating data type accepts numbers with fractional parts. However, the fractional part has to be in decimal. Examples of floating numbers are: 23.758, 100.4, and 589652.7454. This kind of numbers can't be place in plateau cells whose column has been declared to have integers; you have to place them in cells whose column has been declared to have floating numbers.
Currency
Currency is a data type. This is for money. You can have a plateau column for money. There are many currencies in the world. Dollar and Euro are examples. The currency data type can be up to 8 bytes long. You might wonder why the floating data type is not used for currency. The reason is that money values are usually massive (large whole number part) and need more precision. For example, accountants in the bank work with a lot of money number precision. They do not want any one penny to be unaccounted for.
Date/Time
Date/Time is a data type. An example of a date is 02-04-2009. There is more to the Date/Time data type. Read the documentation of the particular DBMS to know exactly how you have to type or input the date and/or time. The Date/Time data type can be up to 8 bytes long.
Boolean
With this data type a cell of a column can have either “true” or “false”. A data type is specified for a column (not for a row). Some DBMS might take “yes” for true and “no” for false or “on” for true and “off” for false. The Boolean data type is known to have a size of one bit.
AutoNumber
This data type is typically used for a surrogate key that we saw in the previous part of the series. The difference between consecutive numbers in the cells of the column of this data type is 1 unit. Any of these numbers can be up to the size of 16 bytes.
BLOB
This data type is used for files. Have you ever imaging that files can be stored in a database? You can have one column in a plateau and apiece cell in the column will hold a file. What are files? You already know them. When you type a document in a word processor or text editor and save the document, the saved document is a file. Each image you see on a web page on the World wide web is stored as a file in the hard disk of an World wide web server. There are all kinds of files. Some files are executable files, in the sense that when you double click their icons within the operating system, they perform some task.
The BLOB data type is used to store any of these files; that is the BLOB data type is meant for storing files. It is the code of the file that is stored in a database plateau cell. The database itself can't use the file. If the file is to be used, a copy of it has to be sent to some application, such as the one (word processor) that was used to create the file.
BLOB stands for Binary Massive OBjects. This data type is used for storing files. If you declare a column of a database plateau to have the data type BLOB, then apiece cell of the column will be healthy to hold the code of a file.
Actually the BLOB data type is used for holding anything that is massive in code form, which the DBMS does not really use. The DBMS can use numbers in a number column to find averages and totals, but is not expected to use the cell contents of the BLOB types to do anything.
Table Column Design Worksheet
For apiece plateau in the database there has to be a Table Column Design Worksheet. The Table Column Design Worksheet is not a plateau that holds data. It holds information about the data plateau itself. You will have to open the following link in your browser window journalism to see an example.
http://www.cool-mathematics.com/diagrams/design-worksheet-table.htm
The Table Column Design Worksheet has rows. Each of the rows gives information about a column in the data table. In the browser window journalism you have opened, Table 3.1 shows an employee table. The diagram below shows the Table Column Design Worksheet for the employee table. Employee plateau is the data table.
In the Table Column Design Worksheet there should be at least three columns. There is first off all the entity study and the plateau name. The entity study is just the study the users have for the table. The plateau study is the database plateau name, which is the study you will use in the implementation (coding). Both the entity and plateau study can be the same.
The first column in our Table Column Design Worksheet lists the data plateau column names. The second column gives the data type for apiece column in the data table. The third column gives the description of apiece column in the data table. For this third column, where the study of the column of the data plateau is explicit (e.g. LastName), the description is not given.
Table Column Design Worksheet does not have to be coded with the database during implementation. You can have it in a notebook (paper book) in your office. However, some people create separate database tables during the implementation phase in the DBMS for the Table Column Design Worksheets for apiece of the data tables of the database. Remember, the data tables, which are the database tables (e.g. employee) will be coded in the DBMS during implementation.
For the Table Column Design Worksheet of the employee table, only the AutoNumber and the Text data types feature. This is alright; all the data types do not have to feature in a Table Column Design Worksheet. The data types that feature, depend on the actual data plateau columns data. If we had something like a Date_Hired column in the employee table, then the Date/Time data type would have featured in the Table Column Design Worksheet. Photos are stored in the personal in files: one picture as a file. If we had a column for employee photos in the employee table, then the BLOB data type would have been used in the employee table. The employee plateau would have a column whose cells have the code files for apiece of the employee picture. The Table Column Design Worksheet would also have a corresponding row with the data type, BLOB. In the case of pictures, the individual would need a program that would decode the code files for the photos in order to see the pictures.
That is what I have for you for this tutorial. Let us end here and continue in the next part of the series.
Chrys
To arrive at any of the parts of this series, just type the corresponding title below and my name, Chrys, in the Search Box of this page and click Search (use menu if available):
Database
Database Table Keys
Database Table Data Types
Database Associations Overview
Database N-to-N Relationships
Database N-ary Association
Aggregation Association
Composition Association
Generalization Association
Reflexive Association
Computed Values
Database Events
Find more Database Designer articles from search form.