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Computer Fundamentals - Engineering

Q1:

What type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to prevent two devices from trying to use it at the same time?

A Bus control

B Interrupts

C Bus arbitration

D Status

E None of the above

ANS:C - Bus arbitration

Control bus: is used by the CPU to communicate with devices that are contained within the computer. This occurs through physical connections such as cables or printed circuits.

Bus arbiter : is a device used in a multi-master bus system to decide which bus master will be allowed to control the bus for each bus cycle.

Bus arbitration : is the process by which the next device to become the bus master is selected. The selection of bus master is usually done on the priority basis.