The Central Processing Unit [CPU] sound

The Central Processing Unit [CPU] : 

The Central Processing Unit [CPU]

The Brain of the Computer : 

The Brain of the Computer CPU is the short name for Central Processing Unit. It is basically a circuit which is electronic in nature and is used for execution of computer programs. CPU is the heart of a computer. In fact whatever functions a computer performs is through a CPU.

The Microprocessor : 

The Microprocessor The introduction of the microprocessor in the 1970s significantly affected the design and implementation of CPUs. The first commercially available microprocessor was the Intel 4004 and then the Intel 8080. The Intel C4004 Microprocessor The Intel 8080 Microprocessor

History : 

History Computers such as the ENIAC had to be physically rewired in order to perform different tasks, which caused these machines to be called fixed program computers. Since the term "CPU" is generally defined as a execution device, the earliest devices that could rightly be called CPUs came with the first stored program computer.

The five basic components of a CPU : 

The five basic components of a CPU The CPU is composed of five basic components: RAM, registers, buses, the ALU, and the Control Unit. To better understand the basic components of the CPU, we will consider each one in detail lets take a look.

RAM – Random Access Memory : 

RAM – Random Access Memory RAM: this component is created from combining latches with a decoder. The latches create circuitry that can remember while the decoder creates a way for individual memory locations to be selected.

Registers and Buses : 

Registers and Buses Registers: These components are special memory locations that can be accessed very fast. Three registers are shown: the Instruction Register the Program Counter and the Accumulator. Buses: These components are the information highway for the CPU. Buses are bundles of tiny wires that carry data between components. The three most important buses are the address, the data, and the control buses.

ALU and Control Unit : 

ALU and Control Unit ALU: This component is the number cruncher of the CPU. The Arithmetic / Logic Unit performs all the mathematical calculations of the CPU. It is composed of complex circuitry similar to the adder presented in the previous lesson. The ALU, however, can add, subtract, multiply, divide, and perform a host of other calculations on binary numbers. Control Unit: This component is responsible for directing the flow of instructions and data within the CPU. The Control Unit is actually built of many other selection circuits such as decoders and multiplexors. In the diagram above, the Decoder and the Multiplexor compose the Control Unit.

The five basic components in action : 

The five basic components in action