How to configure desktop keyboards on an Android tablet?
Android tablets usually nowadays support multi function port. That means if you connect an OTG cable (available for $1-2) to the micro USB port and a USB keyboard on the other end you should be able to use the keyboard.
I shall get back to you if further inquiries are to be made in this topic
Connecting to keyboards, mice, and other input devices
I viewed this article
After a blue tooth connection is estabiished between keyboard and tab is there a setting to configure to enable typing through keyboard?
is there any keyboard icon on the status bar (next battery or clock?) or a message appearing?
how about paired bluetooth device settings like Input device (use for input) check the box
External Keyboard Helper Pro
How To Connect a USB Keyboard To Your Android Phone
Are they Bluetooth keyboards? Because if so you need only go through the usual Bluetooth process to tie the keyboard to your device. Are they USB? In that case, unless your tablet includes a USB port, you're going to need to purchase an adapter for the job. I won't get into that here, because I'm certain it's totally different for every tablet and impossible for most. Just get a Bluetooth keyboard if this is something you want to do.
Yes blue tooth keyboards.
Tab does have usb port which supports data exchange but not usb charging ( TAB - HCL ME AM 7A1 model )