What is the similarities and differences between main memory and flash memory?

Answer 1

Main memory (commonly called RAM) is high speed, "dynamic" memory, used by the processor to run applications. Dynamic memory does not retain information after the computer is turned off, but it stores applications' program data while the computer is still running.

Flash memory tends to be a bit slower than RAM, and can be used in much the same manner as a physical disk drive, not losing its data when it loses its power supply. Flash memory can be used in digital cameras, removable flash drives, and now with the advent of SSD's (Solid State Drive), as a replacement to HDD's (Hard Disk Drive) in computers.

Answer 2

Cache (pronounced cash) memory is extremely fast memory that is built into a computer's central processing unit (CPU), or located next to it on a separate chip. The CPU uses cache memory to store instructions that are repeatedly required to run programs, improving overall system speed. The advantage of cache memory is that the CPU does not have to use the motherboard's system bus for data transfer. Whenever data must be passed through the system bus, the data transfer speed slows to the motherboard's capability. The CPU can process data much faster by avoiding the bottleneck created by the system bus.

Flash memory (sometimes called "flash RAM") is a type of constantly-powered nonvolatile memory that can be erased and reprogrammed in units of memory called blocks. It is a variation of electrically erasable programmable read-only memory (EEPROM) which, unlike flash memory, is erased and rewritten at the byte level, which is slower than flash memory updating. Flash memory is often used to hold control code such as the basic input/output system (BIOS) in a personal computer. When BIOS needs to be changed (rewritten), the flash memory can be written to in block (rather than byte) sizes, making it easy to update. On the other hand, flash memory is not useful as random access memory (RAM) because RAM needs to be addressable at the byte (not the block) level.

Answer 3

Flash memory is a type of EPROM (Erasable programmable read-only memory)

Main memory can be ROM (Read-Only Memory) or RAM (Random-Access Memory)

Both store data.

Answer 4

the similarities between a main memory and a hard disk is that both of them save data that has been saved on the computer.

M