What is mean by CMOS?What is mean by BIOS?

Question

The above Question is from the suject Computer Organisation.

Answer 1

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Complementary metal–oxide–semiconductor (CMOS) ("see-moss", IPA: ['si.mɜs]), is a major class of integrated circuits. CMOS chips include microprocessor, microcontroller, static RAM, and other digital logic circuits, as well as some analog circuits such as image sensors.

CMOS is also sometimes explained as complementary-symmetry metal–oxide–semiconductor. The words "complementary-symmetry" refer to the fact that the design uses complementary and symmetrical pairs of p-type and n-type MOSFET transistors for logic functions.

Two important characteristics of CMOS devices are high noise immunity and low static power supply drain. Significant power is only drawn when its transistors are switching between on and off states; consequently, CMOS devices do not produce as much heat as other forms of logic such as TTL. CMOS also allows a high density of logic functions on a chip.

The phrase "metal-oxide-semiconductor" is a reference to the nature of the fabrication process originally used to build CMOS chips. That process created field effect transistors having a metal gate electrode placed on top of an oxide insulator, which in turn is on top of a semiconductor material. Instead of metal, today the gate electrodes are almost always made from a different material, polysilicon, but the name CMOS nevertheless continues to be used for the modern descendants of the original process. (See also MOSFET.)

A chip with a large number of CMOS transistors packed tightly together is sometimes known as CHMOS (for "Complementary High-density metal–oxide–semiconductor").

The combination of MEMS sensors with digital signal processors on one single CMOS chip is sometimes known an CMOSens.

BIOS, in computing, stands for Basic Input/Output System or Basic Integrated Operating System. BIOS refers to the software code run by a computer when first powered on. The primary function of BIOS is to prepare the machine so other software programs stored on various media (such as hard drives, floppies, and CDs) can load, execute, and assume control of the computer. This process is known as booting up.

BIOS can also be said to be a coded program embedded on a chip that recognises and controls various devices that make up the computer. The term BIOS is specific to personal computer vendors. Among other classes of computers, the generic terms boot monitor, boot loader or boot ROM are commonly used.

While the name BIOS is an acronym, it may also be a play on the Greek word βιος (bios), meaning life. The term first appeared in the CP/M operating system, describing the part of CP/M loaded during boot time that interfaced directly with the hardware (CP/M machines usually had a simple boot loader in ROM, and nothing else). Most versions of DOS have a file called "IBMBIO.COM" or "IO.SYS" that is analogous to the CP/M disk BIOS.

Answer 2

CMOS is a type of memory chip that stores the BIOS information. The terms often are used interchangeably.

CMOS stands for Complementary Metal Oxide Semiconductor and is pronounced "sea moss." It describes the material out of which the chip is made. A CMOS chip will store information as long as it receives power that is usually supplied by a battery.

The BIOS is the Basic Input Output System. On startup, the BIOS tests the system and prepares the computer for operation by searching for system components and configuring memory to access the system hardware. It then loads the operating system and passes control to it.

Answer 3

CMOS and BIOS are pretty much the same. I'm not sure about this part, but I think the difference is the type of computer. For example, IBM or not. They contain information about the computer itself, such as the types of drives, number of sectors, landing zones, types of video, keyboard, printer, etc. They also contain the internal clock; time and date. They contain the start-up procedures. There's much more, but that's all I have to say about that. Not many people ask such questions any more, since DOS went out of style. Not meaning to say that the two are related, but concern with them seemed to have gone hand in hand. Good luck with it!

Answer 4

(b?´?s) Acronym for worry-free enter/output gadget, the outfitted-in software that determines what a computing gadget can do with no need access to classes from a disk. On computers, the BIOS consists of each and each of the code required to regulate the keyboard, exhibit exhibit, disk drives, serial communications, and numerous miscellaneous applications. The BIOS is frequently placed in a ROM chip that consists of the computing gadget (it really is often said as a ROM BIOS). This guarantees that the BIOS will continually be accessible and only isn't damaged through disk mess ups. It also helps a computing gadget as well itself. because RAM is swifter than ROM, although, many computing gadget producers layout structures so as that the BIOS is copied from ROM to RAM each and anytime the computing gadget is booted. it truly is conventional as shadowing. Many modern computers have a flash BIOS, which signifies that the BIOS has been recorded on a flash memory chip, which may be as a lot as date if needed. the computing gadget BIOS interior reason standardized, so all computers are similar at this aspect (inspite of the reality that there are diverse BIOS variations). added DOS applications are frequently further through software modules. this suggests you could improve to a extra recent version of DOS without replacing the BIOS. computing gadget BIOSes that ought to cope with Plug-and-Play (PnP) units are conventional as PnP BIOSes, or PnP-conscious BIOSes. those BIOSes are continually applied with flash memory somewhat than ROM.

Answer 5

Go to Google and you'll find the answer :
CMOS stands for :
Complementary Metal Oxide Semiconductor.
BIOS stands for :
Basic Input/Output System