Apr 4, 2023Data transmission is sending and receiving digital or analog data between devices. This can be achieved through different mediums, What are the types of data What is the role of content
Data transmission is the transfer of data from one digital device to another. This transfer occurs via point-to-point data streams or channels. These channels may previously have been in the form of copper wires but are now much more likely to be part of a wireless network.
There are two methods used to transmit data between digital devices: serial transmission and parallel transmission. Serial data transmission sends data bits one after another over a single channel. Parallel data transmission sends multiple data bits at the same time over multiple channels.
Sequence of bits or bytes of a maximum predetermined size
In computing, a block, sometimes called a physical record, is a sequence of bytes or bits, usually containing some whole number of records, having a maximum length; a block size.
Data thus structured are said to be blocked.
The process of putting data into blocks is called blocking, while deblocking is the process of extracting data from blocks.
Blocked data is normally stored in a data buffer, and read or written a whole block at a time.
Blocking reduces the overhead and speeds up the handling of the data stream.
For some devices, such as magnetic tape and CKD disk devices, blocking reduces the amount of external storage required for the data.
Blocking is almost universally employed when storing data to 9-track magnetic tape, NAND flash memory, and rotating media such as floppy disks, hard disks, and optical discs.
Data transmission standard for mobile phones
In communications, Circuit Switched Data (CSD) is the original form of data transmission developed for the time-division multiple access (TDMA)-based mobile phone systems like Global System for Mobile Communications (GSM).
After 2010 many telecommunication carriers dropped support for CSD, and CSD has been superseded by GPRS and EDGE (E-GPRS).
Remote data transmission (RDT) was a term used in the 1980s, primarily in Germany, for the transmission of data between computers over a medium using a communications protocol.
At the time, the most widespread form was RDT over the telephone network.
Other transmission media like radio waves or light were also used.
Most RDT now uses the Internet.
