The Differences Between Flash Memory and Memory
Flash memory is a non-volatile memory with long service life, which can still save the stored data information in the case of power failure. Data deletion is in fixed blocks rather than in a single byte (note: NOR Flash is stored byte). The block size is generally 256KB to 20MB. Flash memory is a variation of electrically erasable programmable read-only memory. The difference between flash memory and EEPROM is that EEPROM can be deleted and rewritten at byte level instead of wiping the entire chip. But a majority of chips of flash memory needs block mass erase procedure. Because flash memory can still save data in the case of power failure, flash memory usually is used to keep setup information, such as keeping data in the BIOS of computer, PDA, digital camera and so on.
Flash memory is a non-volatile memory, which can still save the stored data information in the case of power failure. Because flash memory doesn’t rewrite data in bytes like RAM (random access memory), flash memory can not replace RAM.
Flash card is a memory which adopts flash memory technique to store electronic information. And, because it is usually applied for digital camera, palmtops, MP3 and other small-sized digital products as storage medium, it looks small and likes a card, which is called as flash memory card. According to different manufacturers and applications, flash memory cards can be divided into Smart Media, Compact Flash, Multi Media Card, Secure Digital, Memory Stick, XD-Picture Card and MICRODRIVE. Although these flash memory cards have different looks and specifications, they have the same technical principle.
The characteristics of flash memory (ROM) are exactly the opposite of memory. Although there is a flash word in the name of flash memory, the data stored in flash memory is long-lasting. It is not like memory in which data must be lost in the case of power failure. Thus, flash memory is often used to store the data which needs to be saved in the long term, such as the photos taken by our phones and the profiles stored in the tablet computer. In order to store more of our data, the capacity of flash memory is generally larger. The memory cards and USB flash drives we often used are a kind of flash memory.
Generally speaking, the memory is simply used to store the level signal of the data. It needs continuous power supply. When the power is off, the data is lost. The capacity is relatively small, but the access speed is fast and the service life is unlimited. The memory is generally used for the CPU of the device processor. From a professional point of view, memory is also called as Random Access Memory. When people purchase tablet computers and phones, people usually call memory as RAM, because of its characteristic of the lost data when power supply dropping. Some people maintain that memory is not the real store data, but memory plays an irreplaceable role in facilitating system fluency.
Memory is a key part of computer, which is a bridge to connect with CPU. All programs of computer are operated in memory, so the performance of a memory plays a significant role to computer. Memory is also called as internal memory, which is used to store the computing data of CPU temporarily and data exchanged with external storage such as hard disks. If computer is running, the CPU will move the data that needed to be processed into memory for processing. When the computing is finished, the CPU will release the results. Therefore, the operation of memory also decides the stability of computer. Memory is made up of memory chip, circuit board and connecting finger.
In the structure of computer, there is an important part that is memory. Memory is used to store the profiles of program and data. For the computer, with the memory, there is a memory function to ensure normal operation. There are many kinds of memory. According to its function, memory can be divided into main memory and auxiliary memory. And, main memory is also called as internal memory (referred to as memory, HongKong and Taiwan called memory).
Memory is also called as main memory, which is the memory space that CPU can store directly and is made up of semiconductor device. The character of memory is the fast memory rate. Compared with external memory, memory is the main part of computer. The programs we have used in daily life, such as windows operating system, typing software, game software, etc. are usually installed on the external storage such as the hard disk. But, this is not enough to use its functions; you must put them into memory to run, in order to really use its functions. We usually enter a paragraph of text, or play a game, in fact, all that are in memory. Just like in a study room, the bookshelves and bookcases that store books are equivalent to the external storage of computers, and the desk we work on is memory. Usually, we store a vast amount of data to be stored permanently on the external storage, and put some temporary or a small amount of data and programs in the memory. Of course, the quality of the memory directly affects the running speed of the computer.