1.
When did text messages over cell phones first begin to occur? |
I

it was first used on December 3rd, 1992

hope this helps

b. related objects

explanation:

data is stored in related objects in an access database.

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)