I've seen a topology that has 1 router for each network, for example:
192.168.1.2/24 PC1 ->
192.168.1.3/24 PC2 -> 192.168.1.5/24 SWITCH -> 192.168.1.1/24 ROUTER
192.168.1.4/24 PC3 ->
192.168.2.2/24 PC1 ->
192.168.2.3/24 PC2 -> 192.168.2.5/24 SWITCH 192.168.2.1/24 ROUTER
192.168.2.4/24 PC3 ->
So clearly we can see that each PC's FastEthernet is connected to each router's interface, and from my understanding, a router's job is to connect networks together, i.e. connect 192.168.1.0 and 192.168.2.0 together and not multiple devices. In summary, my question is: do each interface in a router have independent ip address/network or they are basically an ethernet interfaces that connect multiple devices in a single network?