There are infinitely many. In fact there are infinitely many is which just one key is used. For example, a, aa, aaa, aaaa, aaaaa, and so on.
If repetition is not allowed, then a 104 key windows will give rise to 2^104-1 = approx 2.03 * 10^31 (or 20. 3 nonillion) combinations.
The method of taking keys off a laptop keyboard is different depending on the model. Consult your owner's manual for details.
all laptops are different, just count them
Your laptop keys turn off after a while if the sticky keys are turned on.
Is the keys on a laptop or desktop? Is on a desktop they just pop off real easy and you can replace them with new keys. If it is on a laptop they are a little harder and require some work.
Broken
Yes most do
i also confused about that! but I search the answer on google. it shows that "DES uses a 56-bit key, so there are 256 possible keys"
In reality no. With mechanical keys there is a limited number of possible combinations, but as long as they're sufficiently mixed up and no one knows which goes where it's considered safe enough. No burglar is going to carry around several hundreds of keys for each brand of locks in the blind hope that one of them would work.
Well since you asked this question you must of used the keys on your laptop/computer! So you must of had the sense to count them...Total Keys = 84, but it depends on what computer you have....
A phone is usually much smaller than a laptop, so the keys have to be smaller and fewer :-) The keys also have to be harder, so they are not so easily pressed when you have the phone in the pocket.
eighty-seven
The functions keys on a laptop are sort of a shortcut for the user. They have function keys for volume, refresh and search to name a few. This is a way to complete your task faster.