Short answers, pulled from the story.
A ROM cartridge is a replaceable part that connects to a consumer electronics device such as a video game console or home computer. The cartridge's ROM is memory-mapped directly into the system's address space, allowing the CPU to execute the program in place without copying it into RAM, which produces nearly instant load times.
Wallace Kirschner and Lawrence Haskel of Alpex Computer Corporation, along with Jerry Lawson at Fairchild Semiconductor, invented the modern game cartridge for the Fairchild Channel F home console in 1976. The Atari 2600 adopted the same approach the following year and brought it to mass popularity.
Nintendo used ROM cartridges for the Nintendo 64 and did not switch to optical media until the GameCube launched in 2001. The company reversed course with the Nintendo Switch in 2017, returning to cartridge-based Game Cards, and continued that approach with the Nintendo Switch 2 in 2025.
Between 1983 and 2013, a total of 2,910.72 million software cartridges were sold for Nintendo consoles. In 1976 alone, 310,000 home video game cartridges were sold in the United States.
ROM cartridges cost more to manufacture than optical discs and held less data. The largest Nintendo 64 Game Pak stored up to 64 MB, while competing CD-ROMs on the PlayStation and Sega Saturn held 650-700 MB. Cartridge releases also required large production runs upfront, creating the risk of thousands of unsold units.
Yes. Casio made ROM Packs for its Casiotone keyboard line in the 1980s, and Yamaha produced Music Cartridges for its DX synthesizer series and PSR keyboard lineup. These cartridges stored MIDI sequence data rather than game code, giving musicians instant access to additional sounds and songs.