CMOS is a type of memory chip which is mounted on the motherboard and is running with the help of a battery. do you know that What is CMOS, If not then today’s article is going to be very beneficial for you. By the way, whenever it comes to Integrated Circuit, how can one forget CMOS.
This is because the two biggest advantages of CMOS are such that no one else can provide them, their high noise immunity and low static power consumption. CMOS circuits use a combination of P-Type and N-Type MOSFET, so that they can easily implement logic gates and other digital circuits.
If seen, there are many such features and advantages of CMOS, due to which it is given a place in almost all modern intergrated circuits. That’s why today I thought why not you should also be provided with complete information about the meaning of CMOS so that you too can come to know about this great technology.
So without further delay let’s start and What is CMOS Know about in Hindi. It has always been my endeavor to provide you as much complete information as possible, so that you will not have to go anywhere else.
What is CMOS
CMOS Full name ofComplementary Metal Oxide Semiconductors, CMOS is a type of memory chip which is mounted on the motherboard and is running with the help of a battery. this battery CMOS Cell It is also said
CMOS technology is a very popular technology in the computer chip design industry. At the same time, it is used in a very big way in this industry. In today’s time, it is used in many applications in the form of Integrated Circuits.
This technology is used in modern computer memories, CPUs and cell phones because of its many advantages. In this technology both P channel and N channel of semiconductor devices are used.
One of the very popular MOSFET technologies available today is Complementary MOS or CMOS technology. It is a dominant semiconductor technology used in microprocessors, microcontroller chips, memories such as RAM, ROM, EEPROM and application specific integrated circuits (ASICs).
CMOS which is the main advantage NMOS and BIPOLAR Technology It is compared to its smaller power dissipation. Unlike NMOS and BIPOLAR circuits, almost no static power dissipation is found in a complementary MOS circuit.
Power dissipates only when the circuit actually switches. As a result, it is possible to integrate a large amount of CMOS gates in an IC, which can provide much better performance than NMOS and Bipolar Technology.
Complementary Metal Oxide Semiconductor transistor has two types of MOS circuit P-channel MOS (PMOS) and N-channel MOS (NMOS). Let us know about both these types.
What is NMOS
NMOS It is built in a p-type substrate in which n-type source and drain are diffused.
In NMOS, majority carriers are electrons. When a high voltage is applied to the gate then NMOS starts conducting. Similarly, when a low voltage is applied to the gate, then the NMOS starts conducting.
NMOS is considered faster than PMOS, since the carriers of NMOS are electrons, and they travel at twice the speed compared to Holes.
What is PMOS
P-channel MOSFET There are P-type sources and drains are diffused in the N-type substrate. Majority carriers in this are holes. When a high voltage is applied to the gate, then the PMOS starts conducting. Whereas when a low voltage is applied to the gate, then PMOS starts conducting. By the way, these PMOS devices are more immune to noise than NMOS devices.
Who was the first to discover CMOS?
In the year 1963, Frank Wanlass CMOS was first discovered by He even made a patent on it when he Fairchild Semiconductor I was doing some experiments.
What is the meaning of CMOS in computer?
CMOS (complementary metal-oxide-semiconductor) This technical term usually refers to that small amount of memory in a computer motherboard that stores BIOS settings. Talking about some BIOS settings, it includes system time and date, as well as hardware settings.
You must have heard terms like Clearing CMOS many times, but you would not have understood it, then it means resetting the BIOS settings to its default levels. This is a very easy task, but due to this many problems of the computer are fixed.
What are the different names of CMOS?
CMOS is referred to by many names such as Real-Time Clock (RTC), CMOS RAM, Non-Volatile RAM (NVRAM), Non-Volatile BIOS memory, And complementary-symmetry metal-oxide-semiconductor (COS-MOS). All have the same meaning that CMOS.
| Real-Time Clock (RTC) | CMOS RAM |
| Non-Volatile RAM (NVRAM) | Non-Volatile BIOS Memory |
| Complementary-Symmetry Metal-Oxide-Semiconductor (COS-MOS) |
Difference Between CMOS and BIOS
| CMOS | BIOS |
|---|---|
| It is a memory chip as well as a hardware part of the computer, which is pre-installed in the motherboard. | BIOS is a system software, which is installed inside cmos. |
| This is a volatile chip. | BIOS is a non-volatile memory. |
| BIOS settings are stored inside CMOS. | The program of the computer booting process is stored inside the BIOS. |
| Being a chip, it cannot be upgraded and updated. | It is updated and upgraded through flashing. |
| The full name of CMOS is Complementary Metal Oxide Semi-Conductor. | The full name of BIOS is Basic Input Output System. |
How BIOS and CMOS work together
This BIOS is also a computer chip on top of the motherboard like CMOS, while its work is slightly different, which is to communicate processor and other hardware components such as hard drives, USB ports, sound cards, video cards, And with other hardwares. Whereas a computer without a BIOS cannot understand how these pieces of computer will work together.
CMOS is also a computer chip in the motherboard, or we can call it more specifically a RAM chip, which means that it can normally lose its settings which are stored when the computer shuts down. .
But this CMOS battery is used to provide constant power to the chip.
When the computer boots up for the first time, then the BIOS pulls all the information it needs from the CMOS chip, so that it can understand all the hardware settings, time, and different settings and work accordingly.
What is CMOS Battery?
CMOS is usually a CR2032 cell battery Power is provided using This battery is called CMOS battery.
Most CMOS batteries have a lifetime, which is almost the same as the lifetime of the motherboard in which it is used. in most cases 10 yearsbut it may have to be replaced sometimes.
If you get to see some major signs like Incorrect or slow system date and time, and loss in BIOS settings, then it shows that your CMOS Battery is dead or about to die.
To fix this, you have to replace them. Together it is very easy to do, you just have to remove the dead battery and fit a new one.
How long can a CMOS battery last?
The life of CMOS Battery can be between about 5 to 10 years. CMOS Batterycoin cellAlso called.
About CMOS and CMOS Batteries
While most motherboards have a spot for the CMOS battery, some smaller computers, such as tablets and laptops, have a small external compartment for the CMOS battery that is connected to the motherboard via two small wires.
Some devices in which CMOS is used are microprocessors, microcontrollers, and static RAM (SRAM). It is very important to understand that both CMOS and BIOS are not interchangeable terms.
Although both of them work together for a specific function within a computer, but these two are completely different components.
When we start the computer, then we have an option to boot within BIOS and CMOS. By opening the CMOS setup, you can easily change the settings it stores, such as the date and time, how the different components of the computer will start.
You can also disable / enable some hardware devices using these CMOS setup.
CMOS chips are most needed in battery-powered devices such as laptops because they use very little power, using other types of chips.
Although they use both negative polarity circuits and positive polarity circuits (NMOS and PMOS), only one circuit type can be powered at a time.
notes The Mac equivalent of CMOS is called PRAM, whose full form is Parameter RAM.
What are the applications of CMOS?
Complementary MOS or CMOS processes are very widely implemented and together they have fundamentally replaced all NMOS and bipolar processes from all digital logic applications. This CMOS technology is used in the digital IC designs shown below.
These devices are used with analog circuits in a wide range of applications such as image sensors, data converters, etc.
Advantages of CMOS
Let us know about the advantages of CMOS as compared to NMOS: –
What is the Full Form of CMOS?
The full form of CMOS is “Complementary Metal Oxide Semiconductors,
Who invented CMOS and when?
CMOS was first invented by Frank Wanlass in 1963.
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