Memory card
Fujio Masuoka invented flash memory at Toshiba in 1980. This invention laid the groundwork for all future electronic data storage devices. The technology remained a laboratory concept until 1987 when Toshiba commercialized it. Before this moment, computers relied on floppy disk drives that consumed too much power and took up valuable space inside laptops. Engineers needed an alternative that weighed less and occupied less volume than traditional media. Some early developers also sought a lower cost option compared to ROM cartridges used by video game systems. The shift from volatile RAM with lithium batteries to non-volatile flash memory changed everything. SanDisk introduced FlashDisk in 1992 as one of the first PCMCIA cards without battery requirements.
The Japan Electronic Industry Development Association began work on a standard for memory cards in 1985. They developed the JEIDA memory card in 1986 before the Personal Computer Memory Card International Association formed in 1989. PCMCIA adopted the 68 pin connector design from JEIDA and released specifications for Type I cards in 1990. Competing formats emerged including Bee Card, Astron SoftCard, Sega Cards, NEC UltraLite, and Mitsubishi Melcard. These variants used different connector counts like 60 or 50 pins. Early cards sometimes contained SRAM which required a lithium battery to keep data intact. Other cards held non-modifiable ROM or write once read many EPROM. In 1994 CompactFlash arrived followed shortly by SmartMedia and Miniature Card. By 2001 SmartMedia alone captured 50% of the digital camera market while CF dominated professional photography.
In 2000 the Secure Digital format was announced with visions of unifying multiple electronic devices under one slot. The goal was to create a single expansion capability for various gadgets instead of maintaining incompatible standards. By 2005 SD and similar MMC cards had nearly taken over SmartMedia's spot despite stiff competition from Memory Stick variants. Sony and Olympus began offering additional SD-Card slots on new products starting in 2010. Industry observers noted this development signaled an end to the format war around January 2010. Chip-online reported that the SD-card prevailed after years of conflict between manufacturers. NBC News confirmed that storage-format wars cleared up as major brands adopted the standard. The shift allowed consumers to use one card type across cameras, phones, and consoles without adapters.
Physical dimensions shrank dramatically from bulky PC Cards measuring 85.6 mm by 54 mm down to modern microSD variants at just 15 mm by 11 mm. Early PCMCIA Type I cards measured 3.3 mm thick while newer formats like Nano Memory reach only 0.7 mm thickness. The trend toward smaller cards drove the decline of previous generations labeled compact but now appearing large. Mobile phones and PDAs required these reduced sizes to fit inside handheld devices. Some early cards held maximum capacities of 64 MB before flash technology scaled higher. Microdrive devices offered higher capacity than memory cards until prices dropped below their cost point by 2006. PocketZip and Dataplay concepts also became obsolete once flash memory prices fell and capacities rose. Today's cards range from 12.3 mm wide for Nano Memory to 38.5 mm for CFexpress Type B.
The Neo Geo AES released in 1990 by SNK was the first video game console able to use a memory card. These AES memory cards remained compatible with Neo Geo MVS arcade cabinets allowing players to migrate saves between home and arcade systems. Cartridge-based systems previously used battery-backed volatile RAM within each individual cartridge to hold saved data. Systems without this RAM relied on password systems or failed to save progress entirely. Memory cards became commonplace when home consoles moved to read-only optical discs beginning with TurboGrafx-CD and Sega-CD. Until the sixth generation of video game consoles manufacturers based memory cards on proprietary formats. Later systems adopted established industry formats like FAT32 for compatibility across different hardware platforms. Most portable gaming systems still rely on custom memory cartridges due to low power consumption and reduced mechanical complexity compared to hard drives.
Current specifications show bus speeds ranging from 104 MB/s for early SD versions up to 4 GB/s for latest CFexpress models. Storage limits vary widely from 2 TB for standard SD cards to 144 PB for high-end enterprise solutions. Interface standards include UHS-I, UHS-II, PCIe 3.0 x1, and NVMe protocols depending on the card type. Launched in 2017 Q1, UFS Card supports speeds up to 600 MB/s while XQD reached 985 MB/s by 2018 Q2. Full-duplex transfer rates now exceed 3938 MB/s for top-tier CFexpress Type A variants. Size constraints allow capacities up to 1.15 EB for certain enterprise-grade formats released in 2023 Q3. These metrics reflect how far technology has progressed since the first PCMCIA cards held just 1 to 5 MB at US$100 per megabyte in the early 1990s.
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Common questions
Who invented flash memory and when did it happen?
Fujio Masuoka invented flash memory at Toshiba in 1980. This invention laid the groundwork for all future electronic data storage devices.
When was the first commercial memory card released by SanDisk?
SanDisk introduced FlashDisk in 1992 as one of the first PCMCIA cards without battery requirements. The technology remained a laboratory concept until 1987 when Toshiba commercialized it before this moment.
Which video game console was the first to use a memory card?
The Neo Geo AES released in 1990 by SNK was the first video game console able to use a memory card. These AES memory cards remained compatible with Neo Geo MVS arcade cabinets allowing players to migrate saves between home and arcade systems.
What year did the Secure Digital format get announced and what happened by 2010?
In 2000 the Secure Digital format was announced with visions of unifying multiple electronic devices under one slot. Industry observers noted this development signaled an end to the format war around January 2010.
How small are modern Nano Memory cards compared to early PC Cards?
Physical dimensions shrank dramatically from bulky PC Cards measuring 85.6 mm by 54 mm down to modern microSD variants at just 15 mm by 11 mm. Size constraints allow capacities up to 1.15 EB for certain enterprise-grade formats released in 2023 Q3.