Difference between ROM and RAMPosted by Just Kappel on May 29th, 2021 What is RAM? RAM stands for random access memory. That is also known as temporary memory. RAM is used to store data and programs which are utilized by the processor in real-time. Data on RAM could be erased, read, and write anytime. Data stored in RAM is temporary and is automatically erased when the computer is turned off. Types of RAM: There are basically two types of RAM as follows: SRAM: SRAM stands for stable random access memory. SRAM stores data using the state of six transistor memory cells. DRAM: DRAM stands for Dynamic Random Access Memory. DRAM stores the info using capacitors and transistors. Difference between DRAM and SRAM: SRAM: SRAM is really a one chip memory. The data access time of SRAM is faster than DRAM. SRAM Storage capacity is less than DRAM. SRAM is expensive than DRAM. DRAM: DRAM is an off chip memory. The info access time of DRAM is slower than SRAM. DRAM storage capacity is more than SRAM. DRAM is cheaper than SRAM. project closeout What is ROM? ROM means read-only memory, it is also referred to as permanent memory. ROM is really a type of electronic storage that comes included in a device during manufacturing. You will discover ROM chips in your computers and many other styles of electronic products such as for example car radios, VCRs, and digital watches. ROM is a volatile memory which means it remains viable even though your computer / device is off. Types of ROM: There are basically five types of ROMs. Let?s discuss at length one by one. PROM: PROM means programmable read-only memory. Data is stored in PROM is only once and can't be changed or deleted. An example of a PROM may be the BIOS in older computers. But now PROM has been replaced by EEPROM. EPROM: EPROM means Erasable Read only memory. It?s a second kind of Read Only Memory. The data remains constant even when there is no power in the EPROM. Data could be reprogrammed and erased in EPROM using ultraviolet (UV) light. UV light erases the data on the chip, so we are able to reprogram the data in it. EEPROM: EEPROM means electrically erasable programmable Read Only Memory. The principle procedure for EEPROM is similar to that of EPROM, which we mentioned previously, but the way to write and erase data by exposing it to electrical charge. Data can be reprogrammed in EEPROM, about 10,000 times. EEPROM allows an individual to program and delete data at any location in the memory, however the data erased by one byte at once instead of erasing the entire chip. That?s why the reprogramming process could be a bit slow. Flash Memory: Flash memory is really a modern type of EEPROM. Compared to normal EEPROM, the speed of rewriting and deleting data from flash memory is faster. Flash memory is a distinct type of EEPROM, which is programmed to erase the large block of data at once. Additionally it is used to transfer data between different devices. Difference between RAM and ROM: The main element differences between RAM and ROM are as follows: RAM: RAM stands for Random. only Memory RAM is really a volatile memory, which means that the data is stored given that the power is supplied. The data is stored in RAM could be altered and retrieved. Data processing speed of RAM is faster than ROM. The data stored in RAM is easy to get at. CPU can access the data directly to the RAM. RAM can be used as a CPU cache memory. The physical size of the ROM is usually bigger than the RAM. It usually will come in two different sizes for laptops and computers. Laptop RAM is 3 inches long and 1 inch wide. However, the desktop RAM is 6 inches long and about 1 inch wide. Its more expensive than ROM. Types: SRAM (Static Random Access Memory), DRAM (Dynamic Random access Memory). ROM: ROM stands for Read only Memory. ROM is really a non-volatile memory, which means that the data is stored until the power is turned off. The info is stored in ROM can only just be read. Data processing speed of ROM is slower than RAM. The info stored in ROM isn't easily accessible. CPU cannot access data right to the ROM unless the data is stored in RAM. ROM can be used as firmware by microcontrollers. Its size limits are often smaller than RAM based on storage capacity. Its size limits are often smaller than RAM predicated on storage capacity. It?s cheaper than RAM. Types: PROM (programmable read-only memory), EPROM (Erasable Read only memory), EEPROM (electrically erasable programmable Read Only Memory), Flash Memory, MROM (Mask Read Only Memory). Bottom Line: Both ROM and RAM are essential memories for a computer. RAM is necessary for CPU processing and RAM is required to boot up the computer.Like it? Share it! More by this author |