a memory chip that permanently stores instructions and data. Its contents are created at the time of manufacture and cannot be altered. ROM chips are used to store control routines in personal computers (ROM BIOS), peripheral controllers and other electronic equipment. They are also often the sole contents inside a cartridge that plugs into printers, video games and other systems.When computers are used in hand-held instruments, appliances, automobiles and any other such devices, the instructions for their routines are generally stored in ROM chips or some other non-volatile chip such as a PROM or EPROM. Instructions may also be stored in a ROM section within a general-purpose computer on a chip. See PROM, EPROM and EEPROM. Contrast with RAM., püsisalvestusega pooljuhtmälude üldnimetus; ühekordse salvestusega, ümberprogrammimisvõimaluseta pooljuhtmälu