Yes they are 
and while 16 MHz doesn't sound like much compared to modern-day computers (well, my parents' first PC was running at half that when in "turbo" mode), you can do a lot of work with it.
Yes they are and while 16 MHz doesn't sound like much compared to modern-day computers (well, my parents' first PC was running at half that when in "turbo" mode), you can do a lot of work with it.