![]() Although discrete circuits can be altered in principle, through the addition of bodge wires and/or the removal or replacement of components, ICs cannot. ![]() ![]() Strictly speaking, read-only memory refers to memory that is hard-wired, such as diode matrix or a mask ROM integrated circuit (IC), which cannot be electronically changed after manufacture. Software applications (like video games) for programmable devices can be distributed as plug-in cartridges containing ROM. Read-only memory is useful for storing software that is rarely changed during the life of the system, also known as firmware. Data stored in ROM cannot be electronically modified after the manufacture of the memory device. Read-only memory ( ROM) is a type of non-volatile memory used in computers and other electronic devices. The ROM is the IC on the right labeled "MX23C1603-12A". Shown here is the inside of a Pokémon Silver Game Boy cartridge. Many game consoles use interchangeable ROM cartridges, allowing for one system to play multiple games.
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