Is ROM Still Used
Why computer need ROM (Read Only memory) | BIOS | CMOS
StriJan Channel:
Readonly memory (ROM) is a type of nonvolatile memory used in computers and other electronic devices. Data stored in ROM can only be modified slowly, with difficulty, or not at all, so it is mainly used to store firmware (software that is closely tied to specific hardware, and unlikely to need frequent updates) or application software in plugin cartridges. Strictly, readonly memory refers to memory that is hardwired, such as diode matrix and the later mask ROM (MROM), which cannot be changed after manufacture. Although discrete circuits can be altered in principle, integrated circuits (ICs) cannot, and are useless if the data is bad or requires an update. That such memory can never be changed is a disadvantage in many applications, as bugs and security issues cannot be fixed, and new features cannot be added. More recently, ROM has come to include memory that is readonly in normal operation, but can still be reprogrammed in some way. Erasable programmable readonly memory (EPROM) and electrically erasable programmable readonly memory (EEPROM) can be erased and reprogrammed, but usually this can only be done at relatively slow speeds, may require special equipment to achieve, and is typically only possible a certain number of times. In computing, booting (or booting up) is the initialization of a computerized system. The system can be a computer or a computer appliance. The booting process can be "hard", , after electrical power to the CPU is switched from off to on (in order to diagnose particular hardware errors), or "soft", when those poweron selftests (POST) can be avoided. On some systems a soft boot may optionally clear RAM to zero. Both hard and soft booting can be initiated by hardware such as a button press, or by software command. Booting is complete when the normal, operative, runtime environment is attained. A boot loader is a computer program that loads an operating system or some other system software for the computer after completion of the poweron selftests; it is the loader for the operating system itself. Within the hard reboot process, it runs after completion of the selftests, then loads and runs the software. A boot loader is loaded into main memory from persistent memory, such as a hard disk drive or, in some older computers, from a medium such as punched cards, punched tape, or magnetic tape. The boot loader then loads and executes the processes that finalize the boot. Like POST processes, the boot loader code comes from a "hardwired" and persistent location; if that location is too limited for some reason, that primary boot loader calls a secondstage boot loader or a secondary program loader. On modern general purpose computers, the boot up process can take tens of seconds, or even minutes, and typically involves performing a poweron selftest, locating and initializing peripheral devices, and then finding, loading and starting an operating system. The process of hibernating or sleeping does not involve booting. Minimally, some embedded systems do not require a noticeable boot sequence to begin functioning and when turned on may simply run operational programs that are stored in ROM. All computing systems are state machines, and a reboot may be the only method to return to a designated zerostate from an unintended, locked state. In addition to loading an operating system or standalone utility, the boot process can also load a storage dump program for diagnosing problems in an operating system. Boot is short for bootstrap[1][2] or bootstrap load and derives from the phrase to pull oneself up by one's bootstraps.[3][citation needed]The usage calls attention to the requirement that, if most software is loaded onto a computer by other software already running on the computer, some mechanism must exist to load the initial software onto the computer.[4] Early computers used a variety of adhoc methods to get a small program into memory to solve this problem. The invention of readonly memory (ROM) of various types solved this paradox by allowing computers to be shipped with a start up program that could not be erased. Growth in the capacity of ROM has allowed ever more elaborate start up procedures to be implemented..Read More »
what's ROM?
Talib Shahwan:
Short for readonly memory, ROM is a storage medium that is used with computers and other electronic devices. As the name indicates, data stored in ROM may only be read. It is either modified with extreme difficulty or not at all. ROM is mostly used for firmware updates. A simple example of ROM is the cartridge used with video game consoles, which allows one system to run multiple games. Another example of ROM is EEPROM, which is a programmable ROM used for the computer BIOS, as shown in the picture below. Note: Unlike RAM (random access memory), ROM is nonvolatile, which means it keeps its contents regardless of whether or not it has power. Where is the ROM on a computer? For the computer the main EEPROM and BIOS is on the computer motherboard. Note: Other expansion cards and devices may have their own EEPROM or ROM on them as well. There is one major difference between a readonly memory (ROM) and a randomaccess memory (RAM) chip: ROM can hold data without power and RAM cannot. Essentially, ROM is meant for permanent storage, and RAM is for temporary storage. Alternate explanation A ROM chip is a nonvolatile storage medium, which means it does not require a constant source of power to retain the information stored on it. By contrast, a RAM chip is volatile, which means it loses any information it is holding when the power is turned off. Other differences between a ROM and a RAM A ROM chip is used primarily in the start up process of a computer, whereas a RAM chip is used in the normal operations of a computer once the operating system has been loaded. Writing data to a ROM chip is a much slower process than writing it to a RAM chip. A RAM chip can store multiple gigabytes (GB) of data, ranging from 1 GB to 256 GB per chip. A ROM chip stores several megabytes (MB) of data, typically 4 MB or 8 MB per chip. Computer ROM A good example of ROM is the computer BIOS, a PROM chip that stores the programming needed to begin the initial computer start up process. Using a nonvolatile storage medium is the only way to begin the start up process for computers and other devices. ROM chips are also used in gaming system cartridges, like the original Nintendo, Gameboy, Sega Genesis, and others. The oldest ROMtype storage medium can be dated back to 1932 with drum memory. ROMtype storage is still used and continues to be improved upon for better performance and storage capacity. Computer RAM RAM chips are also used in computers, as well as other devices, to store information and run programs. RAM is one of the fastest types of memory in your computer and can switch quickly between tasks. For example, the Internet browser you are using to read this page has been loaded into RAM and is running from it..Read More »
What is RAM and ROM
THE CRAZY BROS:
hi guys welcome to TCB What is RAM and what is ROM What is the difference between ROM and RAM? Updated: 01/24/2018 by Computer Hope There is one major difference between a readonly memory (ROM) and a randomaccess memory (RAM) chip: ROM can hold data without power and RAM cannot. Essentially, ROM is meant for permanent storage, and RAM is for temporary storage. Alternate explanation A ROM chip is a nonvolatile storage medium, which means it does not require a constant source of power to retain the information stored on it. By contrast, a RAM chip is volatile, which means it loses any information it is holding when the power is turned off. Other differences between a ROM and a RAM A ROM chip is used primarily in the start up process of a computer, whereas a RAM chip is used in the normal operations of a computer once the operating system has been loaded. Writing data to a ROM chip is a much slower process than writing it to a RAM chip. A RAM chip can store multiple gigabytes (GB) of data, ranging from 1 GB to 256 GB per chip. A ROM chip stores several megabytes (MB) of data, typically 4 MB or 8 MB per chip. Computer ROM A good example of ROM is the computer BIOS, a PROM chip that stores the programming needed to begin the initial computer start up process. Using a nonvolatile storage medium is the only way to begin the start up process for computers and other devices. ROM chips are also used in gaming system cartridges, like the original Nintendo, Gameboy, Sega Genesis, and a number of others. AMIBIOS BIOS The oldest ROMtype storage medium can be dated back to 1932 with drum memory. ROMtype storage is still used and continues to be improved upon for better performance and storage capacity. Computer RAM RAM chips are also used in computers, as well as other devices, to store information and run programs. RAM is one of the fastest types of memory in your computer and can switch quickly between tasks. For example, the Internet browser you are using to read this page has been loaded into RAM and is running from it. ~~~~~~~~~ FOLLOW US ON INSTAGRAM TWITTER ~~~~~~~~~.Read More »
What Made Lineage OS 17 Best Android 10 Rom ?
Game of Roms:
LineageOS 17 based on latest Android 10 is already available for many Android devices. This video lists down LineageOS 17 features good points and bugs Video By Nesh Game of Roms LineageOS 17 is a free, community built, aftermarket firmware distribution of Android 10, which is designed to increase performance and reliability over stock Android for your device. LineageOS 17 is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restore the Google parts. LineageOS does still include various hardwarespecific code, which is also slowly being opensourced anyway. #LineageOS17 #Android10 #GameofRoms Download Lineage os 17 Rom : Gapps: Recovery Needed : How to install Lineage os 17 : Full Review of All Roms Here Havoc os Pie Rom : Pixel 3 OS pie All Phones : McAOSP Pie Rom : CrDroid Pie Rom : AOSP PIE ROM : LINEAGE OS 16 PIE ROM : PIXELPIE ROM : Arrow os : 🔥🔥👉Get 70% off From Amazon Here 🔥🔥 India: Worldwide: 🇮🇳My Hindi Tech Channel And Live Streams: 🌈INSTAGRAM Live Chat Everyday 8Pm ► (Ask me Anything ) 💕Donate Me: 😊FACEBOOK ► 🐦TWITTER ► 🙋♂️Business Enquiries ► Thegameofroms@.Read More »
Xiaomi ROM Versions Explained | What you need to know before Buying Xiaomi Smartphone
RevMeTech:
Xiaomi Global ROM, Xiaomi China ROM these are options which you will probably encounter in your brand new Xiaomi device. But there are a lot of urban legends and wrong informations floating around. I will try to clarify few things. 🔔 Want To See More Videos Like This? SUBSCRIBE 🔥 Reliable Place To Buy Tech 70% Discounts 🛑 💥 Are you in search to buy something? Literally ANYTHING which can be on your mind right now? Go Here type what you want in search and BE AMAZED 📱 Xiaomi Smartphones BEST Prices & ⌚ Affordable Smartwatches Worth Having & 💻 Cheap Ultrabooks, Laptops & Tablets & ⭐️ Accessories For ALL Smartphone Brands CHEAP & 🏠 Make Your Home SMART Cheap & 🔥 Banggood Daily Updated Coupons ➡️ VPN which I use and which I can recommend, cheap and reliable 💥 50%RMT Voucher for ➥ Subscribe: ➥ Follow: ➥ www: ➥ Like: 📪 For business inquiries ONLY contact me here – revmetech@ #Xiaomi #xiaomirom #xiaomiunlock.Read More »
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