Synchronous and asynchronous interruptions

if there are two threads using the same resource, then to make the resource usage and sharing proper such that there is no inconsistency in the data, we go with synchronous interruptions... Which means only one thread feeds at the resource at a time (depends on scheduling algorithm)

Synchromous and Asynchronous are two methods of synchronization in a transmission. If it is monitored by external clock, it is synchronous. If it is monitored by special signal within the transmission medium, it is asynchronous.