What is stack processor?

In computer architecture,

1.what is stack processor?

2.what is typical RISC processor?

What is stack processor?

In computer science, a stack processor is a model of computation within which the computer's memory takes the form of one or more stacks.The residence also refers to an actual computer implementing or simulating the idealize stack machine
Sorry, i do not know almost them but try going to wikipedia.com & i am 100% sure that you will find your answer there.