Terminators

[DirtylilTechBoy]

Hi,

What is the purpose of a Terminator (not T2) and how does it work (looking for visual imagery as I think in pictures)??

Also, purpse of a jumper???

Also, how does parity ram work?? I know that it throws an extra bit along with every 8 bit packet, and that it checks how many 1's or 0's are in the packet, but I'm a little confused on how it all works together.. ....

Dream Theater rulez. They are the best band ever....

 

[stash]

A terminator is used on motherboards that support multiple processors. If you dont have enough processors to fill all the sockets on the mobo, you must use a terminator to fill the empty sockets, otherwise the board will not POST.

 

[bozo1]

Terminators are used to electrically close a bus/circuit. It could be for an unused processor socket in a multiple processor board, as was mentioned, but is only needed if the specific motherboard design requires it. Terminators are also used to terminate a SCSI bus, an Ethernet coax bus, etc.

A jumper is used to electrically close a circuit. They are used to connect 2 pins on a device to enable or disable a feature. (Master/Slave on a drive, etc.)

Parity is a scheme to check data integrity. If a device is running with say even parity, each chunk of data must be an even number. If the raw data is an odd number, the parity bit is set to make the data chuck an even number. The reverse is true for odd parity. If a device is using even parity and a packet arrives that adds up to an odd number, the device knows the data is invalid. Parity can be used in RAM, modems and other devices.