![]() Common applications include systems-on-a-chip (SoC). NOR flash memory is more expensive to produce and is consequently rarer. NOR flash memory typically has higher read speed and better data reading and editing precision (can read data down to the individual byte), making it better suited for code execution.Although the differences between the two are mainly technical, their advantages and drawbacks are: There are two types of flash memory: NOR flash and NAND flash, named after the types of logic gates, basic building blocks in electronic circuits they employ. When writing data to a flash drive, signals pass through the relevant gates to change their state accordingly. When reading a flash drive, electric current attempts to pass through every gate, interpreting open gates as 1s and closed gates as 0s and translating the result into computer data. A gate can store 1 bit (open is 1, closed is 0). Essentially, flash memory stores bits into its cells by opening or closing arrays of microscopic electronic gates. Therefore, 32 gigabytes (32 GB) of data is approximately 256 billion bits. A bit is a single 0 or 1, and a byte is 8 bits. Instead of relying on electromechanical principles to read and write data, like with a hard disk drive or HDD, flash memory uses purely electrical methods like read-only memory or ROM.Īll computer data boils down to strings of 1s (on) and 0s (off). ![]() Volatile memory loses all data it holds when you lose power, whereas non-volatile memory retains all data written to it even after removing power.įlash memory uses at least one flash chip fitted with an array of flash memory cells. Non-volatile memory exists in contrast to volatile memory (e.g., random access memory or RAM). Other standard devices employing flash memory include the internal storage on most smartphones and tablets, solid-state drives (SSDs), GPS devices and embedded computers in medical and military equipment.įlash memory is a specific type of computer memory belonging to a category called non-volatile memory (NVM). These include USB thumb drives and USB-C memory sticks. Today, flash memory is found in commonly available standardized formats compatible with devices featuring the correct ports. In the past, flash drives were primarily available as proprietary memory cards, such as those used by cameras and older video game consoles. ![]() Understanding what a flash drive is and how it works may help protect and store important data so you always have it at your fingertips.įlash drives borrow their name from the computer memory technology they employ: flash memory. Their ability to save large quantities of data locally makes them perfect for numerous applications - from local storage to backups.Īlthough USB drives are ubiquitous today, the underlying technologies are noticeably different from those found in typical computer hard drives. They are highly convenient portable computer data storage devices, typically no larger than a thumb. Although flash drives are made in numerous formats, today's most common type is the USB flash drive.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |