The space bar counter helps you to measure how many times you can hit the space bar button in a given period.
Some video games require using the spacebar for necessary actions, such as shooting or jumping. So, you better get into it fast!
I don't believe I have to specify where the spacebar is on the keyboard (everyone knows that, duh!). So, without further ado, let's see how the Press the Spacebar 100 times in given interval time.