Today on Crash Course Computer Science, we delve into processors. We explore the functions of Arithmetic and Logic Unit, computer memory - registers and RAM, and finally the Central Processing Unit or CPU. CPUs execute programs by performing operations or instructions like mathematical calculations or memory tasks. The CPU consists of functional blocks like memory, memory registers, operation codes, and instruction registers. A CPU requires memory locations, registers, and instructions to function effectively. Ultimately, the CPU's primary role is to process instructions and perform operations within a computer system.