Hi Saravana,
You could, but remember the more devices are connected to the same AP (i.e. the more devices are talking on the same channel at some area), you might experience WLAN network performance drop due to co-channel interference (or, some say for this case, client-induced interference). If those were some devices that need just small datarate and don't talk all the time, it might work (I heard of ca. 170 wireless barcode scanners working on a single AP, but didn't ask how well are they working at that time).
Have a look here: http://divdyn.com/wi-fi-throughput/
Hope that helps,
Tomasz