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.
Function: RAM is the main and short term memory of the computer. RAM chips store data in. rows and columns in an array of transistors and capacitors and use a memory-controller circuit to. retrieve information located at specific addresses.