Cmos

Technology is always changing and evolving and the complementary metal-oxide-semiconductor or CMOS is no different in that respect. CMOS is a type of nonvolatile entrepot that is utilise to store BIOS settings and is powered by a stabbing battery on the motherboard. The CMOS RAM is the traditional name for this storehouse but it is a misnomer now because the newer computers use EEP fixed transshipment center or pulse computer depot now and the precisely use of the battery on the motherboard is to keep the real prison term clock going. These two (CMOS RAM and real-time clock) have been conjugated in the Southbridge chipset now on newer motherboards. The CMOS store is actually a 64 or 128 byte battery-backed RAM memory module that is a part of the system clock chip. almost IBM PS/2 models have the capability for a 2k (2048 byte) CMOS ROM Extension. The extension was world-class used with clock-calendar cards for the IBM PC-XT, when the PC/AT (Advanced Technology) was introduced in 1985; the Motorola MC146818 became a part of the motherboard. Since the clock exclusively uses 14 of the RAM bytes, the residue are available for storing system physical body data. AMSTRAD 8086 machines were among the for the first time to actively use the CMOS memory available and since they lead the AT, do not follow the AT standard.

Originally, IBM only used a small portion of CMOS memory, in the IBM PC/AT good Reference Manual these were defined as bytes 10h, 12h, 14h-18h, 2Eh-33h. The balances was left aviate indeterminate but were quickly taken by multicolor BIOS manufacturers for user-selectable options like wait states, clock speeds, initial boot scram se lection, and password storage. Later, as CMO! S memory requirements grew newer clock chips with 128 bytes of RAM came into use. at once the AT standard was established, there was never whatever fate to store any more than 512 bytes in the memory because it holds only the most basic of boot settings. When the CMOS memory changed to EEPROM in the first place the EEPROM was only able to allow single byte operations fashioning is...If you indirect request to get a full essay, wander it on our website: OrderEssay.net

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