What is the difference between a wireless router and a wireless access point? On a similar topic: Can a wireless directly plug-and-play to non-wireless router without configuration?
Routers control traffic and translate between a local network to the outside network. A Wireless one simply means it can be connected to LOCAL computers wirelessly. Access points are basically an extension of a network port but they provide wireless access to that port. (basically converts what was a wire to wireless access).
A wireless access point allows wireless devices to connect to a local LAN segment effectively acting as a switch. A wireless router can act as a WAP or it can function as both an access point and a router generally routing between the local network segment and the Internet (or a common modem connected to the Internet).
I may not be interpreting your second question properly but I'll give it a shot: A wireless device cannot connect to a non-wireless device unless your wireless device also allows a wired connection. If it only has wireless capability, you just can't do it at all. In the second case, running a cable between the device (such as a laptop) and the router will give you connectivity normally without having to do anything else proficed the network segment has a running DHCP server.
Nice answer and good try for second answer!
Can you pl tell how or which devices ( ebay.in weblink ) can enable wireless connectivity to a wired router with plug-and-play at lowest pay?