CPU (Processor) - What does CPU mean ?

CPU - Central Processing Unit

• CU - Control Unit, this sequences, controls and times the other functions of the CPU.
• ALU - Arithmetic Logic Unit, this carries out simple mathematical equations on the binary data stored inside the data registers.
• Registers - these are temporary memory locations which hold binary data and store the results of ALU calculations, there are also memory address registers which as the name suggests hold data concerning where in the memory certain instructions and data is held.
• BUS - this carries data between the memory and registers.