Of all the findings and human creations that are the fastest evolved and revolution is the computer. At first he was only seen as a tool to perform complex and complex calculations or computations. This kind of usefulness gets fresh air after Alan Turing declares that a device he calls 'Universal Computing Machine' is very likely to be realized, where the tool is able to perform various types of calculations through the existence of a sequence of executable commands aka stored programs. The existence of a program that can be stored is what is the starting point of the birth of modern computers. Why is that?

This is because when a program can be stored, it automatically has a 'container'; and at the same time can also be run by 'container' it. According to the present term, the program is nothing but software, while the container in which the program is stored is hardware. Well, what is called by the computer is a unity of work together between software and hardware. Both need each other.

Hardware requires a series of instructions contained within the software. In the meantime, the software will be meaningless if there is no hardware in it. Among so many types of hardware, the sound card is among the most recently born along with the graphics card along with the birth of multimedia computers. Is a sound card that makes the computer capable of making a sound. Thanks to the sound card, we can appreciate the tone and rhythm produced by the musicians. It's hard to imagine a world without the existence of a sound card that sticks to all of today's computer devices. More clearly about the definition of sound card and its functions and how it works can you refer below:

In general, computers are digital vehicles; a world where everything in it is in binary form. What is contained inside the computer is basically unreal; just a mere discrete mathematical 'game' form that produces everything digital. Well, in order to be able to 'enjoy' the beauty of this digital world, what is required is nothing but a converter, which converts the digital realm to analogue nuances so as to be enjoyed by living beings like us, humans, converters or tools called sound cards.

Sound card is one of the computer hardware that has the main function as a data processing type audio or sound. When you hear a song or speak through a headset connected on a PC or laptop, the sound you hear is processed by the sound card. So any matter of audio or sound is the responsibility of sound card.


As discussed in the above paragraph, the basic function of a sound card is to convert an audio file containing notably digital data (as all files inside the computer) into analog signals that can be captured by our sense of hearing. In this case, the sound card can be viewed as the translator of digital data into analog data, and vice versa. Types may be different, but all sound cards have more or less the same functions as:

1. As a sound producing alias synthesizer
2. As a MIDI interface
3. As an analog-to-digital converter; the most common case found is sound recording
4. As a digital-to-analog converter; the easiest illustration is the sound out when we talk through headsets or voice calls.

Well, in order to perform its function properly, a sound card generally has 4 (four) main parts, namely:

1. An interface connected to the motherboard, usually using Peripheral Component Interconnect (PCI)
2. A number of input and output connectors. Thus, the user can install headphones, speakers or microphone
3. Digital to Analog Converter (DAC) facility; which allows converting digital data to analog sound
4. Facilities Analog to Digital Converter (ADC); which makes it possible to make a digital recording of analog voice inputs

Along with technological advances, sound cards can exist in computers in various ways. The most 'ancient' technology usually puts the sound card into one with the motherboard or the so-called Integrated Sound Card. For computers with large memory, integrated sound card is not a problem. However, most users choose to have a sound card separate from the motherboard to get better computer performance and sound output more stable. Only, users need to pay extra for this one.

Later also rife marketed external sound card, which often become the target of computer users who crave audio solutions home theater quality. There are a number of sound cards that both converters, namely DAC and ADC integrated on a chip coder / decoder alias CODEC. Some of them also have a Digital Signal Processor (DSP), which notabenya is a built-in processing unit. However, this DSP increases CPU load when converting between digital and analog data.


Broadly speaking, there are 3 (three) sound synthesis methods run by a sound card in carrying out its task:

1. Frequency Modulation (FM)
This type of sound synthesis is the least expensive but also less effective. Here, the sound is simulated using certain algorithms to create a characteristic sine wave as close as possible to the original sound.

2. Wavetable
In this one working mechanism, recorded sound samples are 'stored' in the sound card to produce the best sound quality.

3. Physical Modeling
This mechanism is quite complex, and is a new type of synthesis in which sounds are simulated by complex programming procedures. Judging from its function, the sound card looks simple. But, does this hardware work as simple as that? How does the real sound card work? The sound card working mechanism so that can issue sound is as follows:

1.The action the user performs creates digital data in the form of audio files or that contains audio content read from the hard drive and then forwarded to the CPU
2.The CPU passes the digital data to the DSP unit on the sound card
3.The DSP then extracts the digital data
4.The digital data stream extracted by the DSP undergoes a real-time process by the DAC chip circuitry, and creates an analog signal that users can enjoy via headphones or speakers

That is the definition of sound card along with the function and way of sound card on computer or other hardware. Why is a sound card important enough? Because in computer, digital data conversion function alias discrete become sound waves (which notabenya are analog) executed completely by sound card.

VGA is a Video Graphics Accelerator that has a function as a way to process the graphics data to be able to display the monitor screen. In addition VGA Card also has a prossesor section which is usually called the GPU or Grapivs Processing Unit and requires some memory.

VGA can also be regarded as a standard analog computer display that was first marketed by IBM around 1987. Although currently the VGA standard is no longer used because it has been replaced with newer standards, but VGA masuh applied in Pocket on PC.

VGA is also a graphical standard trakhir which is actually often followed by the majority of manufacturers that membut karty graphics on the computer. To view windows until now still using the mode with VGA as it is still getting support by a lot of monitoring manufacturers and also graphics card.

And usually the term from VGA is also very often used to refer to a screen resolution measuring about 640 x 480. Vga card itself is also often used to translate computer output to the monitor. For the graphic design process itself is dperlukan by graphics that are more powerful.

In addition, for VGA itself can refer to the connector of VGA 15 pins that can still be used more widely can deliver signals from analog video to the monitor. Standard VGA has been officially replaced with an XGA standard from IBM replaced with Super VGA.

VGA card function
VGA card function itself is to perform the process of translating or changing the digital signal from the computer into a graphical display on the screen. While the VGA card itself is useful to translate the results of computer output to the monitor. Where is meant for graphic design or drawing and also do game play.

Type of VGA Card

There are several types of VGA cards include: 

ISA VGA Card: this is the type of VGA card which is often included in the ISA bus expansion slot section which still has an 8 bit I / O system or it can be about 16 bits.

EISA VGA Card: this is a type of VGA card that is often paired on an existing EISA expansion slot on a bus with a 32 bit I / O system.

PCI VGA Card: this is a type of VGA card that is attached to the PCI bus slot section which has an I / O system with 32 bits or 64 bits.

AGP VGA Card: this is a type of VGA card plugged into the slot of an AGP bus expansion that has an I / O system with 128 bits or 256 bits.

PCI Express VGA Card: this is the type of VGA card which typed in the expansion slot of the PCI express bus that has its I / O system chain with correct transfer density up to 32 GB / s.

Actually the VGA card itself is already used by Graphic Accelerator is the latest chipset where you already have the ability in 3D acceleration which in integrated on chips it has.

In addition to the VGA card there is now a peripheral on the computer that has a 3D accelerator security support which has a function as a tool to change or perform the translation process of 3d image data is much more perfect and also much more optimal.

Complementary Metal Oxide Semiconductor or what we are familiar with the term CMOS battery is one of the computer hardware similar to battery watch where this hardware is enabled and installed on the board or mainboard to be utilized by the computer's BIOS system.

The purpose of applying cmos battery is that the computer system can remain active and running even in the absence of an electric current. CMOS batteries are included in the type of chip with semi-conductor type used for data storage and this type of chip does not require an additional / external power.

In addition to the above explanation, there is also an explanation if this CMOS battery is often used to refer to a battery-powered chip found on many personal computers to function as a medium for storing some basic information, such as date, time and system configuration settings required by the input system / basic output (BIOS) to initiate computer activity.

CMOS can also be called a battery used by the BIOS to store its settings and remain active in the absence of electricity, a type of semi-conductor chip that stores data without requiring external resources.

• CMOS Battery serves as a device capable of storing time settings on a computer or other term can be called Time Setting, where setting is what will determine a performance for your computer system
• It functions as a medium for storing BIOS settings
• Serves as a medium that determines a computer system in order to perform a Backup & Restore and perform an update
• Gives power to the motherboard in recognizing the installed configuration, when the CMOS does not or does not yet get power from the power supply
• Storing data without requiring external power
• Gives power to the BIOS
• And a very important CMOS Battery Function is storing the BIOS Configuration

Fan Heatsink is one of the computer hardware that has a shape like fan and metal material used as pedestal fan is made of copper and aluminum, the initial purpose of the fan was to give cold temperature on a processor so that the performance of the processor can be more stable and the temperature of the pansa which is removed from the processor can be spread and issued by this fan heatsink.

While the way the fan works to remove the heat released by the processor is quite unique, that is by flowing the hot temperature through the copper and aluminum components mounted on the fan, then the hot temperature that has been attached to the metal will be swept by the fan fan fan so that the hot temperature can be removed and absorbed by the cashing CPU.


The main function of this heatsink fan is as a computer hardware used to help lighten a process from the processor so as not to hold too much heat load. This process can also clearly logic if a surface that is used as a medium of heat transfer is wider the faster it will also a cooling process on a computer. 


How Heatsink works on a computer device is to perform a cooling process at the time the computer device is operating. if on a computer device does not produce a heat then the heatsink will not make a round.

This hardware will receive a heat from a processor, then the heat generated by this processor device will spread to the heatsink part of the device so that the heat will converge on the core of the heatsink, while the work to get rid of is the FAN contained in the heatsink, in another term FAN can be said to be a small fan attached to the top of the heatsink.



If we see this heatsink hardware from the form of this heatsink device design must have a different physical appearance, depending on the vendor respectively - each. This first Ponit also applies if you see the form of heatsink on laptop and desktop computer device of course this bentuuk have very far difference at all.

-In terms of the material

Once in the sense and the main function we have discussed, then in this section if we look at the specifications in terms of materials, then we already know that the main material most often used for the formation / manufacture of this heatsink is copper and aluminum. welds of both materials are used as the main ingredients because these two main ingredients are effective and fast in absorbing heat.

And there are also advantages in aluminum, this material does have properties that are not too fast in the absorption of a heat, but this aluminum has excellent properties and fast in discharging the heat.

Processor / processor is one of the most important components of the computer circuit, without this one device the company will not walk alias will not be useful because the processor is the brain of the computer.
Understanding Processor
Generally understanding the processor or often called the brain of the computer, the processor is clearly an IC that controls the entire course of a computer system and used as a center or brain with the function of performing calculations and perform tasks.

The location of this processor is on the motherboard, now when the motherboard selection must be adjusted to the type of socket from the processor example for intel processor there is socket LGA then look for motherboard with LGA socket also and AMD processor AMD + there must be also adjusted.

Function of Processor
In general, the processor function (processor) is only to process data received from the input or in the input, then will result in output expenditure.

The processor can not work alone but requires support and keep in touch with other components especially hard drives and RAM. In processing a data can be done with the processing time sooner or later depending on the speed of the processor.

Currently, the highest processor speed at 4 Gigahertz (GHz) means that it can read 4000 billion commands in a single step, a fantastic number in the world of technological developments. For gamers, would have been familiar with the term, "greater processor, greater gaming experience", because a game must be very influential with the capacity of a computer processor.

For the aspect of developers or specialized companies production processors there are 2 well-known companies namely intel and AMD. Of these 2 companies are flooding many of the processor market. Products ke2nya certainly have advantages and disadvantages of each. Some say that durability to use for hours or days intel more reliable while for the AMD gamers so the choice because it is better in processing the graph. Insya allah this discussion will be discussed in another opportunity.

The function of RAM is to speed up the processing of data on a PC or computer. The bigger the RAM you have the faster the computer. RAM can speed up the performance of the computer, because RAM provides temporary storage space for the computer. In storing data that is easily retrieved so that it can speed up loading data as well as programs accessed.

The physical form of RAM on a PC is like an electronic circuit like a chip. To install RAM to PC is by inserting into the RAM slot on the motherboard, The type of RAM slot also vary depending on the type of RAM.
A. Types of RAM (Random Access Memory)

The following types of RAM, including:

-RAM (Dynamic RAM) is a type of RAM that must periodically be refreshed by the CPU (Central Processing Unit) so that the data contained within it does not disappear.

-SDRAM stands for "Sychronous Dynamic Random Access Memory" type of RAM which is a continuation of DRAM but has been synchronized by system clock and has a higher speed compared to DRAM.

-DDR RAM is short for "Double Rate Random Access Memory". DDR RAM is often referred to as DDR only. This type of memory is a continuous technology / continuation of SDRAM. There is also a continuation of DDR2 (Double Data Rate Generation 2 RAM) and also DDR3 (Double Data Rate Generation 3 RAM), maybe more here will be a new generation.

-RDRAM is short for "Rambus Dynamic Access Memory" a type of memory that is faster and also more expensive than SDRAM. This memory can be used on systems that use Pentium 4 (four)

 -SRAM is also known as "Static Random Access Memory" type of memory that does not require refresh by the CPU so that the data contained in it remains well stored. RAM of this type has a higher speed in comparison with DRAM and SDRAM.

-EDORAM is derived from the abbreviation "Extended Data Out Random Access Memory", which is the type of memory used on systems that have used pentium. This type can store and retrieve the contents of memory simultaneously, so the speed of reading and writing to be somewhat faster.

The existence of a computer device or laptop and other similar devices of course will not be meaningless if there is no device called Hard Disk. This is nothing else because of the vital role it carries. Often the center of data storage and information for a computer / laptop-based device, Hard Disk device of course has become a device that must be maintained regardless of the circumstances. If not, usually performance than our computer / laptop device will experience slow process or often called slow.

Thus, users should know more about Hard Disk devices. Starting from the sense, function, or even parts of it. Well, if you really want to know the ins and outs of hard disk device, here we suguhkan information understanding and function of computer hard disk.
Understanding Computer Hard Disk
Hard Disk is a computer hardware / laptop that works in a systematic where the data storage media. The data has been stored in the hard disk device will not be lost. Even if the user turns off the computer / laptop device. In other words, the hard drive has a role as a permanent storage medium (data will not be lost or erased). Capacity capacity rather than hard disk itself is also quite large. Where the calculation used is in Byte size (B).

Computer Hard Disk Function
The function of hard disk devices in general is to store data generated by the processing of computer / laptop devices. In it, there is a main storage space in a computer. Where that's where every data and information is stored by it. In addition to having the main space, the hard drive also has component parts. Is a kind of small space consisting of directories, folders, subdirectories, and subfolders, used for data placement and information from the hard disk main space.

Well, that's a little review about the understanding and function of computer hard disk. Hope can inspire you to further recognize the vital device. Where the habit of maintaining and maintaining hard drive kesinergisan we strongly recommend.