What is the difference between ROM and RAM and what does ROM and ram mean

With the development of smartphones, whether it is to look at mobile phone configuration or often in life and the network often hear people talk about some words. For example, mobile phone ram how much or ROM how many and so on. It may be known that the bigger the ROM or RAM, the better, but what the meaning of ROM and ram is and the difference between the two is not understood. The following article for mobile phone enthusiasts baby shoes introduced ROM and ram the main difference.

The phone configuration will see ROM and ram descriptions

Guess what you like: Rom What do you mean by a cell phone rom?

Friends who have read single-chip technology or cell phone communications must know a lot about ROM and RAM, whether ROM or RAM is a storage technology, but the two principles are different, RAM is random storage, power off does not save data, and ROM can be in the case of electricity, still save the original data. It may be said that people will find it very abstruse, and below we take a practical example to introduce.

What do you mean by ROM and ram?

In a professional sense, ROM and ram are all semiconductor memory. The original meaning is: ROM is read only memory meaning, that is, this memory can only read, can not write. and RAM is the abbreviation for random Access memory. The word is due to the fact that earlier computers used a magnetic drum as memory, while the magnetic drums and tapes were typical sequential read-write devices. RAM can be read or written randomly.

In layman's parlance, for example, in a computer, we all know that there is memory and hard disk, in fact, memory is a RAM technology, and ROM is similar to hard disk technology, both are memory, but the speed of RAM is much higher than ROM speed, in the day-to-day operation of the computer, many programs will temporarily run the program commands, stored in memory, but once shut down or power off, the memory of the original temporary storage of the program information will all be emptied, that is, memory can only temporarily store things, can not be saved for a long time, and ROM can be stored, even if the power can be found before the file, which is the hard drive

In a mobile phone, RAM refers to the memory of the phone, for mobile performance, in addition to looking at the mobile phone processor is looking at memory, the larger the memory mobile phone configuration, the current mainstream mobile phones are 1G memory (RAM), compared to high-end mobile phone with 2G memory, due to technical restrictions, the current market has not seen 4GB memory phone. and cell phone ROM refers to mobile phone memory, such as cell phone memory SD card belongs to the ROM category, used to store mobile phone system files, pictures, music, photos and so on. Rom the larger mobile phone can store the larger things, the current general mainstream mobile phone storage for 16GB, higher 32G, 64G, the larger the capacity, the general mobile phone is also more expensive, many mobile phones the same model of different versions are by ROM capacity to divide.

The main difference between ROM and RAM

Through the above introduction, I believe that the mobile phone ROM and ram has been more understanding, as to the main difference between ROM and Ram believe that we have already thought of. On the phone, Ram refers to the mobile phone memory, belongs to the internal memory of the mobile phone, belongs to the random storage, the speed is higher than ROM, for the mobile phone configuration performance plays an important decisive, another power off, the data is emptied, such as mobile phone running QQ and other software, restart the phone, the software is not in This is also better to understand it.

The main difference between ROM and RAM

And ROM is an external storage, for example, we can often buy SD card into the phone, then the cell phone ROM, cell phone rom is what we usually say the memory card, it can be simply understood as a mobile phone hard disk. Used to store mobile phone system files, pictures, movies and so on, will not be lost with power loss data, rom the larger the number of stored data.