Galley
Databus is flow of information called data through a channel. That transportation of information could be serial or parallel. Serial data can be transported basically in two wires circuit, and parallel data is transported through as many wires as its quantity of bits (resolution of the information) Also databus can be in only one direction or both direction.
just one optic cable can carry a lot information to computers
8
A parallel ATA cable has 40 wires. Some high performance cables have 80, but there are only 40 distinct wires - with every other wire being grounded to minimize cross-talk.
A complete data bus structure is responsible to do this
Three wires carry the three phase energy.
16-bit bus means the bus has 16 parallel wires for data transfer. That allows it to transfer 16 bits at a time.
Ribbon cables in a computer are mostly used for carrying data between devices. Sometimes they are used to carry supply voltages as well, but since they are usually lightweight, they are more commonly used for carrying data and control signals. The most common use is for floppy drives and hard drives. However, they can be used for connecting between different circuit boards, such as a mezzanine card - a type of controller card that has two circuit boards. There were also likely used in older mainframe computers since they contained so many circuit boards. On older Apple computers, they were sometimes used as printer cables too.
a usb cable has four wires, two for power and two for communication.
The definition of parallel computing is the processing of data many bits at a time as opposed to serial computing which is the processing of data one bit at a time.
2 plus 2
four