Yes, In normal PCs, There are two modules for adding RAM, one is generally pre-occupied and one is left free to manually add RAM, If you add 1GB RAM with 256MB RAM, it will sum up to 1.25GB of RAM.
Go to your computer memory and remove the the installed miteriall
It depends on your computer, but generally no you can not.
The driver software will need to be installed to use your memory card software.
When you install more memory into a computer, the computer's memory level becomes higher
I have Installed an exstended memory chip in my computer, but I don't know if my computer is reading it, or how to look for its usage
You will not be able to hold any memory
there is not enough ram installed
RIMM memory
I was able to install 1.5 gigs of ram. I tried to upgrade to 2 gigs, but the computer would not recognize it.
Physical memory is a term used to describe the amount of memory [RAM] installed in your computer.
Start->right click on My computer->Properties and the window "Properties" you will see amount of memory installed on your computer.
It's super easy to install memory, just open and pop it in.