System Bus

Hypatia's Protege

Joined Mar 1, 2015
3,228
Hi All
anyone can explain what is a system bus.....please...
Your question is ambiguous:

In electrical systems -- 'Bus' or 'Bus Bar' references a multiply connected, usually rigid, conductor...

In data processing equipment 'Bus' refers to a group of conductors carrying signals having a common 'theme' (e.g. 'Address Bus', 'Data Bus', 'System Control Bus', etc..)

If you are inquiring as to the 'composition' of a 'System Control Bus' -- Signals will typically include:
(Read Enable, Write Enable, Memory (device) Enable, I/O (Device) Enable, Interrupt Request, Interrupt Acknowledge, Bus Request, Bus Acknowledge, Halt/Pause Status, etc... in addition to several CPU specific signals) -- Note also that signals may be multiplexed or, in the case of mutually exclusive signals, 'encoded'...

A more focused response will require a less general inquiry!;):)

Best regards
HP
 
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