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Using the 24-bit memory addressing capabilities of the 286 CPU architecture, a total address space of 16 MB was accessible. Memory above the 1 MB limit was called extended memory. However the area between 640 KB and 1 MB was reserved for hardware addressing in IBM PC compatibles.
The distinction can be arbitrary between a computer bus, often closer in space, ... Reflective memory or RFM2 (1.25 μs latency) ... 66.66 MB/s: PC Card 32-bit ...
The specification for PCMCIA type I cards, later renamed PC Cards, was first released in 1990, and unified the JEIDA memory card standard with the PC Card standard. [ 15 ] [ 17 ] This format later included support for other devices besides memory cards. [ 17 ]
PC Card is a parallel peripheral interface for laptop computers and PDAs. [1] The PCMCIA originally introduced the 16-bit ISA -based PCMCIA Card in 1990, but renamed it to PC Card in March 1995 to avoid confusion with the name of the organization. [ 2 ]
This microSDHC card holds 8 billion bytes. Beneath it is a section of a magnetic-core memory (used until the 1970s) that holds eight bytes using 64 cores. The card covers approximately 20 bits (2 + 1 ⁄ 2 bytes).
PS Vita Memory Card 2012 64 GB Subcompact (15 mm × 12.5 mm × 1.6 mm [7]), compulsory DRM, up to 64 GB, proprietary (can be used on PS Vita only) P2 (storage media) Panasonic MicroP2: 2012 64 GB MicroP2 is a SDXC/SDHC card conforming to UHS-II (Ultra High Speed bus), and can be read by common SDHC/SDXC card readers. xD: Olympus, Fujifilm, Sony
The Personal Computer Memory Card International Association (PCMCIA) was an industry consortium of computer hardware manufacturers from 1989 to 2009. Starting with the PCMCIA card in 1990 (the name later simplified to PC Card ), it created various standards for peripheral interfaces designed for laptop computers.
Magnetic core memory was the standard form of computer memory until displaced by semiconductor memory in integrated circuits (ICs) during the early 1970s. [ 10 ] Prior to the development of integrated read-only memory (ROM) circuits, permanent (or read-only ) random-access memory was often constructed using diode matrices driven by address ...