![]() ![]() #THREE TYPES OF MEMORY PICTURES SOFTWARE#ROM is used mostly to store software that is rarely changed during the life of the system.The content on EEPROM can be programmed and erased electrically. It allows users to write new data on it after erasing.Įli Harari invented the Floating Gate EEPROM (Electrically Erasable Programmable Read-Only Memory) in 1977. PROM was invented in 1956 by Wen Tsing Chow.ĭov Frohman who worked at Intel invented erasable programmable read-only memory (EPROM) in 1971.ĮPROM is a memory device whose content can be erased by exposing it to UV light. Programmable ROM can only be programmed once by the user. ![]() Once data has been written on it, it cannot be altered. Masked ROM is ROM that is hard-wired and pre-programmed. ROM is useful for storing data such as BIOS that is used to perform start-up procedures when the computer is turned on. ROM is non-volatile, therefore the data stored on it is not lost even when the power is switched off.ĭata stored on ROM cannot be altered or changed. Since it is volatile memory, data is lost when power is turned off.RAM can read and write any type of data.Consumes less power compared to disk drives thus increasing the battery life.In laptops, it's common to have 4GB, 8GB, or 16GB.Įstimated cost: The price of 16GB RAM varies from $60-$80 depending on the brand. Use case: Temporarily stores data and programs that the processor requires during program execution, load applications, and read files.Ĭapacity: Most modern computers and phones have from 2GB up to 32GB of RAM. Due to the discharge of capacitors, they need to be periodically refreshed with electricity otherwise there will be data loss. Uses capacitors and transistors to store the data. Uses sequential circuits i.e flip-flops to store data, therefore, it does not need to be periodically refreshed.ĭRAM was invented in 1968 by Robert Dennard. Norman at Fairchild Semiconductor in 1963. A computer with more RAM can run more programs and has better performance. The speed and performance of a computer are directly related to the size of the RAM. RAM is stored on the motherboard in modules called DIMMs(Dual Inline Memory Module). It is volatile as the data stored in RAM is lost when the power is turned off. Random-access memory is a read/write memory used to store data and currently running programs. The memory capacity of the primary memory is limited. Primary memory is the internal memory of the computer and can be directly accessed by the processor. We will dive into each time in more depth. EEPROM - Electrically Erasable and Programmable ROM.EPROM - Erasable programmable read-only memory.The different types of memory devices are: Most electronic devices such as computers, mobile phones, tablets, etc all have a storage device that stores data and/or programs. In this article, we have covered the different types of memory devices like CD-ROM, SD card and much more.Ī memory device is a piece of hardware used to store data. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |