Central Processing Unit, refers to computer hardware that understand and execute commands and data from the software. Another term, the processor (data processing), often used to refer to the CPU. The microprocessor is the CPU that is produced in integrated circuits, often in a package-a single integrated circuit. Since the mid-1970s, microprocessors, integrated circuits have a single common use and become an important aspect in the implementation of the CPU.

* Control unit that organizes the course of the program. This component is certainly present in all the computer controls CPU.CPU duty resulting in synchronization between the components work in carrying out operations functions. included in the control unit responsibility is to take instructions, instructions from main memory and determine the type of instruction. If there are instructions for arithmetic or logical comparisons, the control unit will send instructions to the ALU. Results from processing the data carried by the control unit to the main memory for storage, and in time will be presented to the output device. Thus the task of this control unit are:

Mouse is a device used to enter data into a computer other than the keyboard. Mouse obtain such name because the cable is shaped like a tail sticking rats.

Mouse was first created in 1963 by Douglas Engelbart made from wood with a single button. The second model is equipped with 3 buttons. In 1970, Douglas Engelbart introduced the mouse that could find XY position on the computer screen, mouse is known as the XY Position Indicator (XY position indicator).

Form the most common mouse has two buttons, each one at top left and right above that can be suppressed. However, computer-based Macintosh computers typically use one-button mouse.

Mouse to work with motion capture using a touch ball hard and flat surface. The more modern mouse is not using the ball again, but using an optical beam to detect movement. In addition, some are already using wireless technology, both based radio, infrared, or Bluetooth.

A motherboard is the central printed circuit board (PCB) in many modern computers and holds many of the crucial components of the system, while providing connectors for other peripherals. The motherboard is sometimes alternatively known as the main board, system board, or, on Apple computers, the logic board. It is also sometimes casually shortened to mobo.

Prior to the advent of the microprocessor, a computer was usually built in a card-cage case or mainframe with components connected by a backplane consisting of a set of slots themselves connected with wires; in very old designs the wires were discrete connections between card connector pins, but printed circuit boards soon became the standard practice. The Central Processing Unit, memory and peripherals were housed on individual printed circuit boards which plugged into the backplane.

During the late 1980s and 1990s, it became economical to move an increasing number of peripheral functions onto the motherboard (see below). In the late 1980s, motherboards began to include single ICs (called Super I/O chips) capable of supporting a set of low-speed peripherals: keyboard, mouse, floppy disk drive, serial ports, and parallel ports. As of the late 1990s, many personal computer motherboards supported a full range of audio, video, storage, and networking functions without the need for any expansion cards at all; higher-end systems for 3D gaming and computer graphics typically retained only the graphics card as a separate component.

Random access memory is a type of computer storage whose contents can be accessed in a fixed position ignores the data in memory. This is in contrast to sequential memory devices, such as magnetic tapes, disks and drums, in which the mechanical movement of the storage media to force the computer to access data sequentially.

First time in 60'an known. Only when the semiconductor memory that has not been popular because the price is very expensive. When it is more common to use a magnetic main memory.

Semiconductor companies like Intel to start producing debut with RAM, more precisely type of DRAM.

Usually RAM can be written and read, as opposed to memory-read-only (read-only-memory, ROM), RAM is usually used for primary storage (main memory) for use in computer and change the information actively, although some tools to use several types RAM to provide a secondary storage of long-term.

Software is a computer program that serves as a means of interaction between users and hardware. The software can also be said as 'translator' who commands a user runs a computer to be forwarded to or processed by the hardware. The software is divided into 3 levels: level application program (application program such as Microsoft Office), the operating system level (operating system such as Microsoft Windows), and level programming language (which is divided again over a high-level programming languages like Pascal and low-level programming language the assembly language).

The software is computer program instructions that the contents can be changed with ease. The software is commonly used to control the hardware (which is often referred to as device drivers), do the calculations, the software interacts with the more basic (such as operating systems and programming languages), and others.

Computer hardware are all part of the physical computer, and are distinguished by the data in it or who operate in it, and are distinguished by the software (software) that provides instructions for the hardware to complete the task.

Boundary between hardware and software will be a little blurry when we speak about firmware, because this firmware is software that is "made" into the hardware. This firmware is the area of computer science and computer engineering, which is rarely known by the general user.

* Board system / mother board which houses the CPU, memory and other parts, and has a slot for additional cards.

o RAM - where short-term data storage, so the computer does not need to always access the hard disk to find data. The number of larger RAM will help speed your PC

o Buses:

+ Bus PCI

+ Industry Standard Architecture

+ USB

+ AGP

o ROM (Read Only Memory) in which the firmware is put

o CPU (Central Processing Unit) as the main part of the brain and the computer

Computers are tools used to process the data according to the procedures that have been formulated. Computer word originally used to describe the work people do arithmetic calculations, with or without tools, but the meaning of this word and then transferred to the machine itself. Their origins, processing information almost exclusively related to arithmetical problems, but modern computers are used for many tasks unrelated to mathematics.

In such a definition is a tool like a slide rule, mechanical calculator types ranging from abacus, and so on, until all contemporary electronic computers. Better terms suitable for a broad sense such as "computer" is "that process information" or "information-processing system."

Over the years there have been several different meanings to the word "computer", and several different words are now referred to simply referred to as a computer.

The word computer is generally never used To define people who do arithmetic calculations, with or without a donkey engine. According to the Barnhart Concise Dictionary of Etymology, the word is used in English in 1646 as the word for "people who count" and then before 1897 is also used as a "mechanical calculators. During World War II, the word refers to female workers of the United States and England whose work calculating artillery war path with the cash register.