So, to recap this is ELE 475 or Computer Architecture class. We're going to be focusing on abstraction layers and talking about instruction set architecture and microarchitecture, register transfer language. Little bit into operating systems and little bit down into gates but we're really trying to harness technology and bring it to applications, or bring it into what humans want to accomplish. Today, we talked about ISA, or instruction set architecture, versus microarchitecture, or Big-A architecture versus microarchitecture. And we talked about some ISA characteristics including machine models, encoding, data types, what sort of instructions you can have, addressing modes, and encoding. Next lecture, we're going to start off by talking about microcode. And then, move into our first review lecture, which is review on how to build pipeline processors, review on pipeline. So with that, I'll end here and thank you all for listening.