Do you use or do you know all of the keys on a computer keyboard?  

certainly not,i never use the keys such as power,sleep,wake up and the F keys except F5,F11 and F12 although i know functions of many of them.and there are some keys i don't know their exactely means and when to use them for example insert,home,scroll lock.in fact,as a common user,we need not to know all of the keys or use them.
Have a nice day!

I never use power, sleep and wake up keys, but I am aware of what they exactly do. Mostly I use the function keys specially F1 to F8, page up, page down, home , end and print screen a lot of times whenever necessary.

When I first learned computer I used to have lots of problems finding the keys and many times I had to ask my teacher not about the commands but the location of the keys and function of them. So I decided later to study a bit about the types of keyboards and locations of keys in them and gathered lots of information about their function and all. It helped me a lot as well to work with good speed and ease when I use my Operating system and other applications. Because Using keyboard is much faster than clicking mouse. They really make my life lot more simpler.

No. I do not know anything about those keys. F4 is used for coming out of a game.
When I was in the office, I was using some F keys which I do not remember now. With my limited knowledge I am managing somehow. As and when chance comes, I am learnin a few things.

Hey willimajisir! I hate to admit it but, when I first learned
how to use the computer I was taught what all those F keys
were! And now I have absolutely no idea what any of them are
used for! They now have all the short cut keys so people just
really don't pay much attention to them anymore! I really need
to find out what they are now that you brought it up! I will
have to go do a search because it's bothering me! I'll let you
know if I find out some information on it!

I know that F5 is refresh, delete is delete stuff and insert is to insert text, or other stuff other than that i dont know about the other keys

hi well F1 you use as an emergency key when you need to escape from a program and nothing else seems to work. Insert stands for inserting something into a sentence, delete you surely must use occasionally as you need to get rid of a typing error. pause I am not sure of as I never have used it.But delete really comes in handy. Other than those I never use the others so know nothing about them.But F1 is a good one to know if you have a program stuck and nothing else will work on it you hit F1 and you will get rid of it.

Hi,williamjiser!
When I play a vedio game,I usually use F1 till F12,just like Diablo II ,they are a shortcuts.haha.If I edit one document,usually use “Inert,Delete,Home,End,Page up ,Page down”.PriSc also use,when I edit images .Other keys ,just like "Scroll lock",I not familiar ,and don't use it.

Hi william jisir: it's actually easy to find what's the use of this keys and i can else tell you that they will help you a lot specially when you're writing something in word.

I don't use them - my delete key is to the right and I someitmes use that - insert is annoying - for me I delete usually by highlighted the text with the mouse and then clicking it to delete.

I have to confess my friend that I am ignorant to a lot of keys on my keyboard and what their utility is, I never use any of the F keys at the top, hey maybe this discussion might get people starting to find out what the different keys that are usually ignored are all about? There are 16 F keys on my computer and yet I don't use any of them, I think maybe that's a waste? Waste of keys or a waste of knowledge that could help me in my work?