what is the difference between ram and rom?

RAM memory is a type of computer data storage that works by use of an electronic device called a capacitor to store the bits of data temporarily then transmitting them back to the CPU at a pre-determined time. On the other hand, ROM memory is permanent and does not need an external power source. In other words, RAM needs power constantly but ROM uses it only occasionally meaning RAM requires more electricity.

In addition to this, ROM can be read from from outside whereas RAM must be refreshed constantly for accessing data.

The second largest memory on a computer is random access memory (RAM). It stores data and programmes that can be read, written, and deleted indefinitely. When you switch off the power to a computer's hard disc, data saved in RAM vanishes.

Only the computer has access to the data in the memory. Read-only memory was created to allow for data erasure and rewriting. ROM is used to store firmware for hardware that seldom receives upgrades, such as the BIOS. Even if the power source is turned off, the data is not lost.

Nonvolatile random access memory (NVRAM) is a kind of flash storage. In PCs, EEPROM is the technology utilised for the BIOS. End-user tools don't allow you to control flash storage, but third-party apps and phone software do.

Difference between RAM and ROM -

1. RAM stands for random access memory and ROM stands for read only memory.

2. Written down the data with RAM is fast while written down it with ROM is very slow.

3. In RAM data can be both stored and retrieved while In ROM data can be only read.

4. RAM is a volatile memory as it is erased directly and ROM is non-volatile as it doesn't erased directly.

5. RAM used in CPU cache, primary memory and ROM used in microcontrollers.

6. RAM is costlier while ROM is cheaper then RAM.