This is as opposed to regular system memory, which is cleared each time you turn off the PC. A special type of memory is used to store this information, called CMOS memory, and a very small battery is used to trickle a small charge to it to make sure that the data it holds is always preserved.
www.pcguide.com/ref/mbsys/bios/compCMOS-c.html www.pcguide.com/ref/mbsys/bios/compCMOS-c.html
The BIOS settings for your PC are not stored in the system memory or hard disk. Instead, they are stored in a special reserved memory area that is commonly called the "CMOS Memory". A battery provides backup so that the settings are not lost when the PC is turned off or unplugged.
www.pcguide.com/care/bu/whatBIOS-c.html
Nonvolatile BIOS memory - Wikipedia, the free encyclopedia
Nonvolatile BIOS memory refers to a small memory on PC motherboards that is used to store BIOS settings. It was traditionally called CMOS RAM because it used a low-power CMOS SRAM (such as the Moto...
en.wikipedia.org/wiki/Nonvolatile_BIOS_memory
CMOS memory Definition from PC Magazine Encyclopedia.
www.pcmag.com/encyclopedia_term/0,2542,t=CMOS+memory&i=... www.pcmag.com/encyclopedia_term/0,2542,t=CMOS+memory&i=39875,00.asp
What is the CMOS memory? ... The CMOS memory is used to store system configuration information, such as disk drive parameters, memory configuration, and the date-time, some of which you enter in the CMOS Setup program, . It is used by the Basic Input Output System (BIOS), a program permanently stored in the flash memory...
www.duxcw.com/faq/cmos/cmos.htm www.duxcw.com/faq/cmos/cmos.htm
Below is a typical CMOS RAM memory map for an AT PC. Under a 128byte ISA compatible CMOS, 16 bytes (00h-0fh) is the real time clock, 32 bytes (10h-2Fh) is the ISA configuration data, 16 bytes (30h-3Fh) is the BIOS specific configuration data and 64 bytes (40h-7Fh) is the ESCD (Extended System Configuration Data).
www.bioscentral.com/misc/cmosmap.htm www.bioscentral.com/misc/cmosmap.htm
Later, as CMOS memory requirements grew, newer clock chips with 128 bytes of RAM came into use. However the fact remains that once the AT standard was established, only IBM has tried to change the definitions of that first description.
ivs.cs.uni-magdeburg.de/~zbrog/asm/cmos.html ivs.cs.uni-magdeburg.de/~zbrog/asm/cmos.html
Encyclopedia article about CMOS memory. Information about CMOS memory in the Columbia Encyclopedia, Computer Desktop Encyclopedia, computing dictionary. ... Because the computer's CMOS memory also needs battery power, it is usually contained on the same chip as the RTC.
encyclopedia2.thefreedictionary.com/CMOS+memory encyclopedia2.thefreedictionary.com/CMOS+memory
Personal computers also contain a small amount of battery-powered CMOS memory to hold the date, time, and system setup parameters. ... Focuses on problems related to the motherboard and system devices, including the components of the motherboard, along with system devices such as the cache and I/O buses, the BIOS and CMOS memory,
www.webopedia.com/TERM/c/cmos.html www.webopedia.com/TERM/c/cmos.html
Top questions and answers about CMOS-Memory. Find 15 questions and answers about CMOS-Memory at Ask.com Read more. ... Not finding your answer? Try searching the web for CMOS Memory...
www.ask.com/questions-about/CMOS-Memory www.ask.com/questions-about/CMOS-Memory
Definitions