What it os JAVA ?

Maybe among friends all there may still be confused as to what the diffrence handphone Symbian with java? Or maybe there are not know or confused actually Handphone temen2 it includes symbian or java ?Well, from the temen2 confused, here I will explain a little difference between the two Handphone. 
Symbian OS is an open operating system developed by Symbian Ltd. Designed for use by mobile devices (mobile). Advantages of Hp Symbian, among others:
1. Hp Symbian can already rich multitasking computer, meaning Hp Symbian can open more than one application in standby. So, if there are incoming sms, temen2 ga must be out of the applications that are currently in use to read the sms.
2. Has its own menu button.
3. Hp Symbian usually have the ability to read RAM better than Hp Java. So if you surf, open a large file so much faster.
4. Have two kinds of installers, namely Java (.jad / .jar) and symbian itself (.sis).
5. Can copy and paste (copy and paste) rich computer.
6. Order the menu can be set alone.
7. Game over real appear (depending on the type / types Hp her).
8. Handphone Symbian be reproduced capabilities with the addition of third-party applications, because systemnya open. For example Hp Symbian temen2 can not to play the video with .avi format, temen2 stay put / install applications that can be to play the .avi format. (Hp Symbian classified or so-called smartphones).
The weakness of Hp Symbian is:
1. Because it has an open operating system, Hp type is very vulnerable to viruses such as Cabir, Commwarior, SymbOS.skulls. and much more.
2. Hp with this system is also easy to Hang or later alias slow in opening the gallery, songs, and short messages (SMS).
Meanwhile, Hp with a closed operating system is the operating system Hp JAVA or also called Hp Java. This phone only supports apps and games in .jar format. The disadvantage is that HP is not able to freely inserted or installed all kinds of applications. The advantages are:
1. This phone can not have a virus handphone.
2. Not easy to hang like Hp with Symbian OS.

Hardware Components of a Computer

Computer hardware (computer hardware) is the physical components that make up an integrated system of Personal Computer (PC).
Typically these devices are assembled and largely incorporated into a computer case and others are outside the casing.






The hardware inside the casing generally consists of:

Motherboard (main board)


MotherboardMotherboard / mainboard is a key component to build a computer. Square-shaped board with slots to include other components. Its function is to connect all components of the PC. Other computer hardware are all attached directly to the motherboard slot or at least connected using a cable.


Central Processing Unit (CPU)

CPUBiasa also known as "processor" or "brain" of the computer. The function of this CPU is processing and process all calculations and commands that make the computer can be operated. Because the heat it generates, the CPU is always equipped with a fan and heat sink to reduce the temperature. In the latest CPU types, already equipped with a Graphic Processing Unit (GPU) that is integrated into the CPU, as processing graphics data.

Random Access Memory (RAM)

Random Access Memory (RAM) RAM serves as a transit point to provisional data for the operations being carried out by the CPU. RAM is volatile, meaning that this device does not store data permanently, just for the required operation only. RAM capacity on the PC that we often find quite diverse, ranging from 256 MB (megabytes) - 16 GB (GigaBytes)

Video Graphics Array (VGA)

CardVGA VGA card or graphics card serves as a link that allows the transmission of data between a PC and a graphical display device such as a monitor or projector. Most computers have a separate VGA as expansion cards installed on the motherboard slot. But there is also a computer that has an integrated VGA on the motherboard or on its CPU.



Hard Disk Drive (HDD)



Hard-disk DiskHard serves as a primary data storage in a computer system. Operating systems, applications, and documents stored on the hard-disks. In the latest PC, there are also new hardware called Solid State Drive (SSD). Functions the same as the hard-disk, but offers data transfer speeds faster.



Optical Disc Drive


Optical DriveOptical regular drive is also known as a CD drive, DVD drive, or ODD. The function of this device is to read and also save data to and from optical disc media such as CDs, DVDs, or Blu-Ray Disc.




Power Supply Unit (PSU)



Power Supply UnitPower Supply serves as a converter and distributor of electrical energy from the power outlet (eg PLN) to the form of electrical energy that can be used to run the computer components inside the casing. Typically, this PSU is placed at the back of the casing.





Aside from computer hardware contained within the casing, there are also common components we see outside the casing:

Monitor


MonitorDisebut also screen or display. The function of the screen is to display video and graphical information generated from a computer via a tool called a graphics card (VGA Card). This monitor physical form similar to the television, television usually only capable of displaying graphical information with higher resolution size.




Keyboard and Mouse



Keyboard and mouse MouseKeyboard and serves as an input device to enter text commands, character, or move objects on a graphical interface to be processed by a computer. The size and shape of the tool is quite diverse, but its function is the same.




Beyond the components that we have already mentioned above, there are also computer hardware that not all computers have it:


Uninterruptable Power Supply (UPS)


UPSSering referred to as a battery backup, UPS primary function is to store and provide power backup that will be used when the main power source goes out. Aside from being a power reserve, most UPS also serves as a "stabilizer" that regulates the flow of electricity to fit the needs.




Printer and Scanner



PrinterPrinter serves as a print output of electronic documents both text and graphics. At home computers typically use paper as the print media. While the scanner function is the inverse of the printer that scans the data input from the outside of the computer into electronic form that can be processed digitally.


Speaker
The function of the speaker as the output device is a computer-generated voice. In addition to the speakers, often we find people who use headphones / headset as the sound output device.

Sound Card (voice)
Function as a liaison between the computer and the audio output device such as speakers

Modem
This tool is used to connect a computer to the internet

LAN Card
Function as a liaison computers in a network.

Motherboard components and Functions

Motherboard, or often also we know the name mainboard, motherboard, MB, or system board is a hardware device in the computer system in the form of printed circuit board (PCB).

Its function is to connect all components of a computer. The motherboard can be regarded as the backbone (backbone) of the computer system, all components of a computer is definitely connected to the motherboard, either directly or indirectly.

Motherboards are produced in a variety of sizes, some made specific to a particular system brand. However, most modern mobo made to ready fitted to a wide range of casing sizes. Mobo is installed inside the casing with the facing side of the casing is easy to open, and tightened with a screw.

motherboard

The parts of the motherboard:

chipset
The first and most important part of a motherboard chipset, which serves as a liaison between the processor interface with various external components and buses. This chipset can determine and assess the features and capabilities of a motherboard.

There are two groups of common chipsets we have encountered in the market. Intel chipset group, which can only be used for Intel CPUs, and AMD chipsets for AMD processor output. Both groups were subdivided to various types of generation chipset that continues to grow.

Socket / CPU Slots
Socket is a "bersemayamnya" processor on the motherboard. Just like chipset, socket is also divided on the various types, depending on the type of processor supports.

Basic Input Output System (BIOS) chip
BIOS is a chip that stores the software to control the hardware and serves as an interface between the hardware and the operating system (OS). BIOS used by the computer to prepare prosess boot (startup) and check the readiness of the system and hardware before the computer starts.

Complimentary Metal Oxide Semicondutor (CMOS) Battery
CMOS is a battery to supply power to a small memory on the motherboard that is used to store computer configuration settings, time, etc. CMOS maintain that we do not need to configure these things every time we turn on the computer

memory Slots
Shaped slots rather long and slender serves as a place-install it Random Access Memory (RAM). In the modern computer era, almost all motherboard has at least two RAM slots, even on high-end computer specs there motherboards are equipped to 6 RAM slots.

VGA Slots (Graphic Card Slot)
This slot is used to install the components of a graphics card (video card). In modern computers, generally in the form of slots with PCI-Express interface. In the high-end motherboard can accommodate up to 3 slot graphics card.

expansion Slots
Expansion slots used to install additional devices such as sound card, LAN card, etc.

Storage Drive Connector
Its function is to connect storage devices like Hard Drive, Optical Drive, SSD, and external storage devices. Usually in the form of interface S-ATA (Serial Advanced Technology Attachment) / ATA.

Other Ports
In addition to slots above, there are several ports on the motherboard which is very essential functions such as:

• Pin power port 24/20 Pin - to connect the motherboard to the power supply unit (PSU).
• Port Power 4pin / 6pin - to supply power to the processor.
• Port for the power / reset on the front of the casing.
• Front connector port for USB and Front Audio.

Besides a number of slots and ports above, there is also a part of the motherboard facing the outer casing and can be accessed from the outside. This section is called the Back Panel I / O, usually located on the side of a mobo position, and facing the rear of your case.

Back Panel I / O

Back Panel I / O on the motherboard of the brand MSI

Back panel has several connectors are commonly encountered are :

• PS / 2 port - port for connecting a mouse / keyboard.
• USB Port - The port to connect peripherals with USB interface.
• S / PDIF port - Connect the audio connector S / PDIF
• RJ-45 Lan Port - Connect the LAN network cable
• Audio Port - Connects to the motherboard audio system / speakers.
• etc.