1. Janith Hashan Chameera

    Thread Starter New Member

    Aug 30, 2015
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    0
    Hi All
    anyone can explain what is a system bus.....please...
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,052
    3,244
    Generally that's the main (primary) bus in a digital system where the majority of the system data is carried.
     
  3. Hypatia's Protege

    Distinguished Member

    Mar 1, 2015
    2,803
    1,237
    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
     
    Last edited: Aug 30, 2015
  4. ScottWang

    Moderator

    Aug 23, 2012
    4,855
    767
    You may google : address bus, data bus, control bus, I/O bus.
     
  5. bertus

    Administrator

    Apr 5, 2008
    15,649
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