What does CPU stand for?

What is the main purpose of the CPU?

What is clock speed?

What does quad core mean?

What is the difference between GHz and MHz?

What does it mean if a CPU has a clock speed of 4GHz?

If you have more cores, how does this affect the computer?

If there are 3 million instructions being carried out per second, what is the clock speed of the CPU?

What is it called if there are 8 cores?

What are registers?

Where is the cache located?