I got my laptop secondhand, so I wasn't entirely sure what I had.
The following command not only details my hardware, but creates an HTML (web page) file for reference, which you can then read in a browser like Firefox.
Which is good news for me: turns out there is lots of room for more RAM to make the software work better. A kind of upgrade that's inexpensive -- always a plus -- and makes the computer last longer.
$sudo lshw -html > your-file-name.html
Type (or cut and paste) everything after the $ in a terminal window (Applications > Accessories > Terminal) and supply your password.
Note: if you're not sure what you're doing, don't run commands beginning with sudo or su. You can really mess your machine up. And never, ever run "sudo rm -rf" -- that'll wipe you're computer clean -- 'cause it's a terrible, malicious trap for new Linux user. But this command worked fine for me.
Now to get that RAM . . . .
Hattip to (and at details) Ubuntu Blog.