What is the Difference Between a laptop and Pc

A laptop is a portable computer and a PC is a personal computer, so they aren't actually different things. and a computer gennerally has more memory and is slightly faster but   laptops can be upgraded to change this.The only real difference is size & weight. They essentially both perform the same functions. However - the desk-top machine has space inside the casing for such things as separate video  cards and more hard-drives if needed.