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.
Both the read and write operations can be performed over the information that is stored in the RAM. The ROM memory only allows the user to read the information. User cannot make any changes to the information. Storage. RAM memory is only used to store the temporary information.ajor difference is that electricity is needed to use RAM but this is not true in ROM. There are many difference between RAM and ROM. RAM is used to store only temporary data but ROM is used to store permanent data.