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What is flash memory
Flash memory is permanent or non-volatile memory Memory is used Data is used for storage. Besides storing data, flash memory is also used to save and transfer data.
Flash memory is a type of EEPROM (Electrically Erasable Read-Only MemoryErasable Read-Only Memory). Data stored in flash memory remains safe even when there is no power supply. But data stored in flash memory can be erased and rewritten by a high voltage key stroke.
flash memory car radio, digital cameramobile phone, tablet, printer etc is widely used with.
Flash memory history
Flash memory was invented by Fujio Masuoka in the early 1980s. Fujio Masuoka manufactured flash memory while working for the Toshiba company. In 1984, Toshiba introduced flash memory to the market. After that, in 1988, Intel made NOR flash memory for the processor.
How does flash memory work?
Flash memory is embedded in semiconductor chips, and each chip contains an array of flash memory cells. Flash memory uses electrical circuits to save data, instead of using the traditional electromechanical method.
Current flows through the transistor between the electrical input (source) and electrical output (drain) of each cell. The transistor controls the current path by acting as an on-off switch or gate.
An on transistor allows the flow of electrons, which stores a 1 in the binary code, and an off transistor blocks the electrons and stores a 0.
A volatile memory returns all gates to the 0 position when power is removed, thereby erasing all stored data.
But a non-volatile memory works by connecting another gate, called a floating gate. As electrons pass through the powered transistor, some of the electrons stick to the floating gate and, with or without electricity, stay there indefinitely to store 1.
All types of programmable ROMs (PROMs) experience this partial loss of electrons. The EEPROM gate will only block electrons when a user applies a specific negative voltage to reset the transistor to 0.
Types of flash memory
There are mainly two types of flash memory and both are used for different specific purposes.
- NAND flash memory
- NI Flash Memory
1 – NAND Flash Memory
The speed of reading data in NAND flash memory is slow, it can only access the memory in blocks. NAND is inexpensive flash memory. It is suitable for large files and frequent updates. case able to store efficiently. At present, flash memory is widely used in the form of Pan Drive, SD card, etc.
2 – NOR flash memory
NOR flash memory is capable of reading data at a much faster speed than NAND. It can read and modify data with higher accuracy. Its cost is high compared to NAND flash memory. The NOR rack is the ideal memory for running small code instruction programs. Users mainly choose NOR flash memory for code execution.
Flash memory functions
Here are the main functions of flash memory –
- Flash memory is a storage device used to store data.
- Flash memory is capable of storing data for a long time, so flash memory is also used in data backup.
- transfer data from one computer to another the computer Flash memory is used to transfer files.
Advantages of flash memory
Here are some of the main advantages of flash memory –
- Flash memory is permanent memory, data stored in it remains safe even if power is not available.
- Flash memory is a good option for data backup, data transfer, and data storage for a long time.
- Data stored in flash memory can be erased and overwritten.
- Flash memory is very easy to use.
- Flash memory consumes less power.
Disadvantage of flash memory
Flash memory also has some disadvantages like –
- Each bit of flash memory costs more than a hard drive.
- Flash memory is a bit slow compared to other storage devices.
- Old data must be deleted to store new data.
Flash memory FAQ
Flash memory is a storage device used to store data securely for a long time.
Flash memory is non-volatile memory.
There are 2 types of flash memory – NOR and NAND flash memory.
Flash memory was invented in the 1980s by Fujio Masuoka, an engineer at Toshiba Company.
Flash memory is used in cell phones, digital cameras, tablets, computers, etc.
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