SLR20 Communication Flashcards
Serial transmission
“The method of transferring one bit at a time through a medium.”
Parallel transmission
“The method of transferring blocks of data at the same time.”
Synchronous transmission
“Data transfer method characterised by a continuous stream of data in the form of signals accompanied by regular timing signals. These signals are generated by an external clocking mechanism to ensure both the sender and receiver are synchronised with each other.”
Asynchronous transmission
“The transmission of data in which each character is a self-contained unit with its own start and stop bits and an uneven interval between them.”
Start and stop bits
“In asynchronous transmission, a start bit alerts the receiving computer of the arrival of a character. A stop bit (or sometimes two) signals the end of the character.”
Baud rate
“A number related to the speed of data transmission in a system. The rate indicates the number of electrical oscillations per second that occurs within a data transmission.”
Bit rate
“The number of bits per second that can be transmitted along a digital network.”
Bandwidth
“A range of frequencies within a given band, particularly those used for transmitting a signal.”
Latency
“The delay before a transfer of data begins following an instruction for its transfer.”
Protocol
“A set of rules that allow two devices to communicate.”
“The method of transferring one bit at a time through a medium.”
Serial transmission
“The method of transferring blocks of data at the same time.”
Parallel transmission
“Data transfer method characterised by a continuous stream of data in the form of signals accompanied by regular timing signals. These signals are generated by an external clocking mechanism to ensure both the sender and receiver are synchronised with each other.”
Synchronous transmission
“The transmission of data in which each character is a self-contained unit with its own start and stop bits and an uneven interval between them.”
Asynchronous transmission
“In asynchronous transmission, a start bit alerts the receiving computer of the arrival of a character. A stop bit (or sometimes two) signals the end of the character.”
Start and stop bits
