Know the BIOS and Functions

The term emerged since the days of IBM PC and compatibles triumphed in the 1980's. BIOS stands for Basic Input / Output System. The BIOS is the very first program started when the computer is turned on because the BIOS saving the settings control the computer hardware itself.When the computer is turned on, the BIOS initializes (recognize) hardware devices connected to the computer system. The BIOS then checks the readiness and status of the hardware devices. If no hardware is not present or hardware problems in the system, BIOS will issue a code of signals. The code can be a sound through the speaker or visual display messages on the screen.You are struggling in the field of computerization certainly no stranger heard the term BIOS. His name must have been very familiar to you. In contrast to the ordinary people who did not understand the intricacies of computerized systems and. The words or terms BIOS must be pretty familiar. Although described, is likely to be difficult to imagine.If compared, the BIOS on the computer as well as alarm. BIOS will "talk" to the owner of the computer, to tell if something is wrong with the computer equipment he had. How to Talk BIOS of course different people, as mentioned above, the BIOS will issue the distinctive sounds, and to the layman, the sound from the BIOS could cause panic because of sensitizing the ear.The order of the devices was first detected by the BIOS is the video display card (video graphic card) or a graphics controller, keyboard and mouse, hard disk drives, optical drives, and other devices. Next, look for BIOS program (known as the operating system) stored in the storage media (which have been marked or specified as a boot device) such as hard disk, CD or DVD, then load and run the program.After the operating system is running, the BIOS hands over control of the computer system to him. The whole process is known as booting, or booting up - the term stands for bootstrapping.BIOS program stored in a nonvolatile ROM chip is attached to the computer system motherboard. BIOS, the BIOS in the past stored in the chip which can not be changed anymore contents. However, today, modern BIOS chip contents can be changed or upgraded contents. BIOS programs are usually designed to work with a particular system and have a store of information about the various devices that build such a computer system.BIOS program has a display interface which can be accessed through buttons or a combination of certain keys on the keyboard. Through this interface, a computer user can perform:

•     hardware configuration,

•     setting the system clock,

•     arrangement of system components (including activation and deaktivasinya),

•     setting a storage medium readable option for bootstrapping, and

•     various settings such as password security.

Security Chip BIOSIn the past, the computer BIOS chips that can not be changed again memory contents. The chip is known as a chip ROM (Read Only Memory). Inside this chip, the BIOS program and the setting information is stored. In other words, the BIOS settings in the past can not be changed anymore.By storing the BIOS on the chip EEPROM (Erasable Programmable Read Only Eletrically Memory), the BIOS on modern computers can be updated with the addition of new settings and so on. But this will also increase the risk of emergence of the problem on the computer. The problem could be any setting or a loss of regulation. This can be caused by damage to the memory, either adjust the settings, BIOS upgrade process failure, or virus attacks.At least three known virus attacks or programming errors that can attack the BIOS. In the final decade of the 1990s, there is a virus that can erase the contents of Flash ROM BIOS so that the resulting computer can not be used at all. This virus known as CIH or Chernobyl. This virus first appeared in mid 1998 and became active in April 1999. These viruses delete the contents of memory so the computer BIOS can not boot at all.To fix this, BIOS ROM chip must be removed from the motherboard and re-programmed. The virus is specialized for action in the motherboard with Intel chipset i430TX that are popular in the world at that time. In addition, he is utilizing the ability of the Windows 9x family of operating systems which, when it was popular. This is because these operating systems allow direct access to hardware control by all the programs that run on it.Apart from Chernobyl, there are two techniques that exploit the bug systemsehingga able to change BIOS settings. Black Hat techniques are introduced in the 2006 Black Hat Security Conference (2006) and Persistent BIOS Infection introduced by Anibal Sacco and Alfredo Ortega from Core Security Technologies in SyScan Security Conference in Singapore 2009BIOS codeEach BIOS has a set of code each. BIOS code is usually in the form of audio codes, ie long or short beep is sounded when first turned on the computer. In addition to the form of audio, BIOS code can also be visual, ie the code that appears on the monitor and show the hardware status is analyzed by the computer system BIOS.The thing to understand is, each has a different BIOS BIOS code differently. Therefore, to know the meaning of BIOS code is concerned, you need to know first its kind of BIOS. To know the BIOS code that exist in some specific BIOS, you can check the references in the address http://www.bioscentral.com/ #.Upgrading the BIOSBIOS should ideally only be in-ugrade when our computers were damaged or problem. If the computer is fine you should not upgrade the BIOS, otherwise it is not impossible even your computer can no longer be used.The following is the cause of the BIOS should be upgraded immediately:

• computer turns off before entering the operating system
• our computers are older "old". replacement of the new processor could "confuse" the system BIOS.
• BIOS is damaged.
• BIOS can not detect damage to the computer
• Add to the work of your computer equipment

BIOS is the "alarm" that tells the awkwardness on your computer. BIOS is certainly a very important role and therefore keep the BIOS must be considered to remain stable. The following are things that must be considered, because it can interfere with the performance of the BIOS or BIOS damage:

• Dishutdown turn off the computer without first, or electrical interference that is too often disconnected so that the computer suddenly died.
• Your computer is exposed to the virus.

• Error when upgrading the BIOS. BIOS is not compatible with the motherboard.

If you encounter problems with the BIOS you have to do is to upgdarenya. To perform lawyer-upgradean BIOS, you must provide two files, namely the BIOS file and the software used to upgrade the BIOS itself.Peng-upgradean BIOS is usually done through DOS or MS-DOS. Make sure the BIOS and software that will be used to upgrade the suit, because if not it will actually make the computer off. If the BIOS and software used in line, then your chances of succeeding BIOS to be upgraded.