Why do computers have two memoryRAMROM?

Answer 1

Most data is stored on the computers hard disk drive, but it can be quite slow to retrieve data from the hard drive. RAM, however is very quick when it comes to retrieving data, so the computer transfers programs and files into the RAM when they are in use.

Answer 2

RAM - Random Access Memory is used by the CPU to store and retrieve information. It is writeable and readable. i.e used as a temporary storage for calculations in a similar way we would use paper.

ROM- Read Only Memory. The CPU cannot easily write information into ROM, it is generally programmed upon manufacture with particular data. A program will be stored on ROM, the CPU will read ROM and carry out tasks dictated by the data it reads.

RAM is used for user programs, ROM used for loading operating system

Answer 3

RAM is non-persistent memory and data stored is lost after a powercycle. In order to put some useful data there, such as a program to load the operating system from the hard disk, come other program must be stored somewhere such that it doesn't get lost when your computer is without power.

Historically, this program was held in ROM. Today, these programs are held in any other type of non-volatile memory, most often flash memory. Flash memory provides persistent data storage without power (up to at least 20 years in typical chips, often more). It is generally preferred over ROM because it its cheaper, and it is writeable. The fact that it is writeable (data held in flash memory can be modified) allows to update the system BIOS and bootstrap loader program when an error is found. Flash memory is also cheaper than ROM because ROM is a custom made device, where the data content is submitted to silicon as part of the chip manufacture process. In contrast, flash memory chips are generic chips which can be loaded with any data at a later stage.

Answer 4

There are 2 so that there can be more memory in a computer since RAM even though it is improving still can't hold that much in 1 chip.

Answer 5

A laptop have two difrent memories so as to give the system more memories becaus one memory may not have big space

Answer 6

RAM is the part that the drives go in, as in USB compatible plug and play. Hard Drives plug into the power supply system unit and need to be cleaned out periodically.