Data exists in digital and analog format and transmission can happen for both types through digital and analog channels. If both the data and the transmission method are analog, then this is analog data transmission, but if at least one or both are digital, then the data transmission is digital.
This article focuses on the digital data transmission. Today more and more digital data is created and transmitted because it allows for fast and secure exchange of information. Digital data has no weight, thus the only weight associated with using digital data is often that of the transmitting device and the receiving or reading device. Using digital data simplifies the information backup process, does not contribute to weight when moving or traveling, compared to non-digital forms of data, such as books versus text files.
Digital data transmission, storage, and processing makes it easier to work with data virtually anywhere in the world because it can be stored in a location that can be accessible by multiple people as long as they have Internet connection.
People can also modify this data and work collaboratively on the same document by using remote computing described below, or by working with data shared online, for example with the files shared on Google Docs, or on articles in Wikipedia. This is why data transmission is so important. In fact, some believe that at the moment this is a marketing ploy, because the digital footprint may, in fact, be very similar for working with printed media.
This is because energy is required for running the services to support digital data, and often this energy is produced from unsustainable sources, such as fossil fuels. However, it is the hope of many that we will soon develop technology that is ecologically efficient for working with digital data, compared to the pre-digital era.
In everyday life people are choosing e-readers and tablets in favor of printed media, while large organizations make environmental statements when they keep all of their documentation in digital format and transmit data electronically instead of physically moving paper. As discussed above, this may be simply a marketing strategy at the moment, but nonetheless in part because of this strategy more and more companies are working on digitizing much of their data flow.
In many cases users need to take only minimal steps to ensure data transmission, and only in some situations direct involvement of the user is required, for example when sending emails. For example, to ensure fast Internet connectivity, and hence — fast data transmission between continents, a network of cables was and is still being laid along the ocean floor. It is also known as submarine cable. It connects most coastal countries. These cables cross all of the oceans multiple times, connecting countries through the seas and the straits.
To transmit data, several conditions have to be met: Data has to be encoded in such a way that the receiving party can read it. Sampling is another term used for data conversion.
Generally data is encoded using the binary system, which means that each unit of information is represented as either a 1 or a 0.
Калькулятор скорости Интернет-соединения
It is then transmitted as electromagnetic signals. Often the analog data is converted to digital to be transmitted. For example analog phone calls that originated from a land line or a cellular phone may be converted to digital signals and sent via the Internet to the recipient. During this conversion the Kotelnikov Theorem, also known as the Nyquist-Shannon Sampling Theorem in English , is used. It can be summarized to point out that when converting analog signal to digital, so that it can be transmitted via a digital channel without loss of quality, the signal must not contain any frequencies higher than the half of the selected sampling rate.
Encoding could be secure to ensure that third parties besides the intended receiver cannot decode it if this data is intercepted. Secure encryption protocols are used for this purpose. A transmission channel creates a medium for transmitting the data. Transmitters and receivers are devices that send and receive the data respectively. The transmitter consists of a modem that codes information and any device that transmits electromagnetic waves, from an incandescent lamp that was used to transmit Morse code, to lasers, to LEDs.
A receiver that can detect the electromagnetic signal that the transmitter sent is also necessary. Some examples of receivers include photodiodes, photoresistors, and photomultipliers that detect light, or radio receivers that can detect radio waves. Some of these devices can only work with analog data. Communication protocols are similar to a language in that they facilitate communication during all steps of the transfer of data.
They also allow to identify and solve errors. One of the commonly used protocols is the Transmission Control Protocol, or TCP. Digital data transmission is paramount in computing because without it using computers would not be possible. Below are some interesting examples of what data transmission enables the users to do. IP telephony or voice over IP VoIP technology is becoming a popular alternative to communication by phone via the telephone network.
This form of data transmission uses the Internet. Some of the biggest providers are Skype and Google Talk. LINE is a newer product that is gaining popularity in Japan and globally. Many of the current providers allow free audio and video calls between computers or smartphones, and charge for other services such as conference calling or computer to landline or cellular phone calls through the telephone network.
Data transmission allows organizations to simplify their computing solutions. Some organizations have multiple computers set up for internal use but for some of them only very simple features are required. These computers are connected to the server, which does some of the work for them — they are called client computers or clients in this case.Бит в секунду
In this setup thin client computing is often used. The client computers have very basic features, for example some workstations may provide only Internet access, some may allow use of the library catalogue, others yet may support simple applications such as data entry, for example to track sales. These clients with basic features are called thin clients, hence the term, thin client computing. The user of a thin client works with a screen and an input device such as a keyboard. The thin client sends user requests and data to the remote server, where all the necessary computing is done.
In essence, the thin client is a device that allows the user at the client site to access the server remotely without having to process significant amounts of data or run software at the client site. In some cases client sites use thin client hardware, while in other situations regular computers or sometimes tablets are employed. User interface needs to be processed locally by the thin client, but the rest of the processing is done on the server. In contrast with thin clients, regular computers that process data locally are sometimes called fat clients.
Thin client computing is convenient because it is cheap to install additional clients — most of them do not require expensive memory, processing devices, and software. Thin clients also allow minimizing security vulnerabilities, because the only vulnerable unit in this setup is the server.
Hard drives and CPUs work well only within a certain temperature range, and they cannot tolerate some hazards in the environment such as dust and humidity. When thin clients are used, the environment needs to be carefully controlled only in the server room.
Clients can work outside of these temperature ranges and in more hazardous environments, as long as they do not have local processing and storage capabilities, and as long as the display and the input devices have higher tolerance to hazardous environments, which they usually do.
Thin clients may not work well when frequent updates of the graphic user interface are needed, such as when working with video and gaming. If the server stops working, all of the clients will be disabled until they are connected to a working server. Despite these drawbacks, thin clients are gaining popularity because of their benefits.
Remote computing is similar to thin client computing in that the client computes access the server and often can manipulate the data and run software on the server. The difference is that a client that accesses the server is usually a fat client, that is, a regular computer. Thin clients usually work on the same local network as the server, while remote computing happens between the server and the client outside of the local network, often over the Internet. Remote computing has many applications.
For example it allows people to work remotely while still having access to their company or home server. Companies can connect through remote computing to remote offices, where they outsource some of their activities, such as customer support. Remote computing allows for secure access, to prevent unauthorized people from using the servers, although security is sometimes a concern.
This article was written by Kateryna Yuri. More about Data Transmission and the Sampling Theorem. Do you have difficulty translating a measurement unit into another language? Post your question in TCTerms and you will get an answer from experienced technical translators in minutes. Data transmission is the physical transfer of data a digital bit stream over a communication channel.
Examples of such channels are copper wires, optical fibres, wireless communication channels or data storage devices. The data can be represented as an electric signal, such as changing voltage, or electromagnetic waves in radio, visible or infrared parts of the spectrum. Bit rate or bitrate is the number of bits that are transmitted over a communication channel or processed in a computer system per unit of time. This online unit converter allows quick and accurate conversion between many units of measure, from one system to another.
The Unit Conversion page provides a solution for engineers, translators, and for anyone whose activities require working with quantities measured in different units. Learn Technical English with Our Videos! You can use this online converter to convert between several hundred units including metric, British and American in 76 categories, or several thousand pairs including acceleration, area, electrical, energy, force, length, light, mass, mass flow, density, specific volume, power, pressure, stress, temperature, time, torque, velocity, viscosity, volume and capacity, volume flow, and more.
Integers numbers without a decimal period or exponent notation are considered accurate up to 15 digits and the maximum number of digits after the decimal point is In this calculator, E notation is used to represent numbers that are too small or too large. E-notation is commonly used in calculators and by scientists, mathematicians and engineers.
X FireWire IEEE T0 payload T0 B8ZS payload T1 signal T1 payload T1Z payload T1C signal T1C payload T2 signal T3 signal T3 payload T3Z payload T4 signal Virtual Tributary 1 signal Virtual Tributary 1 payload Virtual Tributary 2 signal Virtual Tributary 2 payload Virtual Tributary 6 signal Virtual Tributary 6 payload STS1 signal STS1 payload STS3 signal STS3 payload STS3c signal STS3c payload STS12 signal STS24 signal STS48 signal STS signal STM-1 signal STM-4 signal STM signal STM signal USB 2.
More about Data Transmission. Antennas of the cell phone base transceiver station tower are part of the transmission and receiving channels of the cellular network. More and more companies are working on digitizing much of their data flow.
Properly sampled image of a building. An optical fiber connector on a cable transmitting audio signal. IP telephony is becoming a popular alternative to communication by phone. You may be interested in other converters in the Miscellaneous Converters group: Online Unit Converters Miscellaneous Converters Data Transmission. Miscellaneous Converters Converters of the measurement units used for measurement data transmission speed, lumber volume measurement and in typography and digital imaging.
Description of metric prefixes and molar mass of compounds calculator. Data Transmission Data transmission is the physical transfer of data a digital bit stream over a communication channel.
Using the Data Transmission Converter This online unit converter allows quick and accurate conversion between many units of measure, from one system to another. More and more companies are working on digitizing much of their data flow In many cases users need to take only minimal steps to ensure data transmission, and only in some situations direct involvement of the user is required, for example when sending emails.
An optical fiber connector on a cable transmitting audio signal Transmission Channel, Transmitter, and Receiver A transmission channel creates a medium for transmitting the data.
Communication Protocols Communication protocols are similar to a language in that they facilitate communication during all steps of the transfer of data.
IP telephony is becoming a popular alternative to communication by phone IP Telephony IP telephony or voice over IP VoIP technology is becoming a popular alternative to communication by phone via the telephone network. Thin Client Computing Data transmission allows organizations to simplify their computing solutions. Remote Computing Remote computing is similar to thin client computing in that the client computes access the server and often can manipulate the data and run software on the server.
References This article was written by Kateryna Yuri More about Data Transmission and the Sampling Theorem You may be interested in other converters in the Miscellaneous Converters group: