The oral mucosa in the area of crenation is usually of normal color, but there may be erythema (redness) if exposed to a high degree of friction or pressure. Crenated tongue is usually asymptomatic and harmless.
ROM stands for read-only memory. It's used to store the start-up instructions for a computer, also known as the firmware. Most modern computers use flash-based ROM. It is part of the BIOS chip, which is located on the motherboard.
Quick Answer. The terms RAM and ROM are acronyms for random access memory and read-only memory.. They are two types of memory with distinctive roles in a computer. The main difference between RAM and ROM is that ROM is a read-only form of memory that cannot be modified.