Because the data the bus carries is in Binary form. Each byte in binary is a group of 8 bits, so making the bus widths multiples of eight allows for the transportation of the Binary data. Prior to the introduction of the 8 bit byte and the EBCDIC character set by IBM in 1964 for their new System/360 series of computers, the standard bus widths used on computers were: 12, 18, 36, 72, and 144 (with a small minority that had 24, 48, or 60) because the standard binary character size was 6 bits and these bus widths are all multiples of 6.
You always want the computer to be able to read/write whole characters in a single memory operation to optimize efficiency regardless of the number of bits in the character.
Some of the newest computers use a 256 bit wide bus! Even wider busses are likely in the future.
A Bar code
The audio bus, USB bus, HDD bus...
The three types of bus present in every CPU are address bus, data bus and control bus.
Another name for a local bus is called a system bus. A local bus or system bus typically travels the day route day in and day out.
A generator bus is the bus that connects the generator to it's generating transformer.
Because everything in a computer is stored and processed in binary, and 1 byte equals 8 bits
32 and 64 bit
Railroads are generally laid in four foot, eight inch widths. This was first started by George Stephenson.
The multiples of any number are endless, but here are the multiples of eight to 100:081624324048566472808896
8,16,24,32
No.
Eight of them.
Any multiple of 24.
Any multiple of 8.
Any multiple of 24.
24 and 48
The Intel 8086 and 8088 motherboards had the system bus speed, which is 5-10 MHz However, the processors for the motherboards had different external data bus widths with the 8088 CPU featuring an 8-bit bus and the 8086 a 16-bit bus.