This document discusses register transfer language (RTL) which provides a concise way to describe operations between registers in a computer using symbolic notation. It defines common registers like the memory address register (MAR) and program counter (PC). Information can be transferred between registers using arrows. Basic symbols are used to denote registers and parts of registers. Transfers can happen over a shared bus connecting all registers. Memory is represented as a device that is accessed using a memory address register to specify the location. RTL provides an organized way to describe the internal operations of a computer concisely and precisely.