What is EEPROM?
EEPROM is the acronym for electrically erasable programmable read-only memory, and is alternatively written as E2PROM. It is pronounced as e-e-prom or e-squared. It refers to a nonvolatile memory that is used in computers as well as other electronic devices that need to save data even when the computer is disconnected from the power source. This is unlike random access memory (RAM), which loses data when the computer is powered off. Actually, EEPROM can be erased and programmed with electrical pulses using a process known as Fowler–Nordheim tunneling to experts. A new EEPROM contains no data and has to be programmed before it can be used. EEPROM data cannot be rewritten selectively, and the data inside the entire chip has to be erased and rewritten (one byte at a time) to update the contents. Therefore, EEPROM is used in many BIOS chips to maintain the system settings. The advent of EEPROM made it possible for manufacturers to update the BIOS program, something that was not possible in
EEPROM stands for Electrically Erasable Programmable Read Only Memory, and is pronounced double-ee-prom or e-e-prom. It’s a long name for a small chip that holds bits of data code that can be rewritten and erased by an electrical charge, one byte at a time. EEPROM data cannot be selectively rewritten; the entire chip must be erased and rewritten to update its contents. While Random Access Memory (RAM) loses its data every time you power down your computer, EEPROM does not require a power source to maintain its data. For this reason EEPROM is commonly used by many BIOS chips to save system settings. BIOS stands for Basic Input/Output System. When you turn on your computer the BIOS chip executes a program called CMOS (Complementary Metal Oxide Semiconductor) that holds settings, which enables the computer to recognize your hardware. You can enter the CMOS program during boot-up to modify BIOS settings. You might need to do this, for instance, when you get a new hard drive. After you modi
