In your own words describe bus contention and how to avoid t

In your own words, describe bus contention and how to avoid this problem. What techniques are used in modern computer systems to avoid bus contention?

Solution

Bus contention is when more than one device tries to drive data line at the same time.
If one device is trying to drive it high and other tries to drive low then, we call it bus contention.
Methods to avoid it are:-
1. By having good arbitration

2. The master device should always control who has access to the bus at any time

3. All slave devices need to be able to tri-state their output to bus

Another solution for bus contention is in the hardware: Use a current limiting resistor on the output of each of the devices. THis will not prevent scrambled data, but one or more of your devices will not perish if they try to fight each other.