Secure Digital in the context of Non-volatile memory


Secure Digital in the context of Non-volatile memory

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⭐ Core Definition: Secure Digital

The SD card is a proprietary, non-volatile, flash memory card format developed by the SD Association (SDA). They come in three physical forms: the full-size SD, the smaller miniSD (now obsolete), and the smallest, microSD. Owing to their compact form factor, SD cards have been widely adopted in a variety of portable consumer electronics, including digital cameras, camcorders, video game consoles, mobile phones, action cameras, and camera drones.

The format was introduced in August 1999 as Secure Digital by SanDisk, Panasonic (then known as Matsushita), and Kioxia (then part of Toshiba). It was designed as a successor to the MultiMediaCard (MMC) format, introducing several enhancements including a digital rights management (DRM) feature, a more durable physical casing, and a mechanical write-protect switch. These improvements, combined with strong industry support, contributed to its widespread adoption.

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Secure Digital in the context of Camcorder

A camcorder is a self-contained portable electronic device with video and recording as its primary function. It is typically equipped with an articulating screen mounted on the left side, a belt to facilitate holding on the right side, hot-swappable battery facing towards the user, hot-swappable recording media, and an internally contained quiet optical zoom lens.

The earliest camcorders were tape-based, recording analog signals onto videotape cassettes. In the 2000s, digital recording became the norm, and additionally tape was replaced by storage media such as mini-HDD, MiniDVD, internal flash memory and SD cards.

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Secure Digital in the context of CDJ

A CDJ is a specialized digital music player for DJing. Originally designed to play music from compact discs, many CDJs can play digital music files stored on USB flash drives or SD cards. In typical use, at least two CDJs are plugged into a DJ mixer. CDJs have jog wheels and pitch faders that allow manipulation of the digital music similar to a vinyl record on a DJ turntable. Many have additional features that are not present on turntables, such as looping, beat analysis, and adjusting tempo independently of pitch. Additionally, some can function as DJ controllers to control the playback of digital files in DJ software such as VirtualDJ and Serato.

Many pro audio companies such as Gemini, Denon DJ, Numark, Stanton, and Vestax produced DJ quality CD players. In 1993 Denon DJ was the first to implement a 2-piece rack-mounted dual-deck variable-pitch CD player with a jog wheel and instant cue button for DJs. It quickly became the industry standard and was widely adopted in most clubs and mobile DJs throughout the 90s up until 2004 when Pioneer made an impact with the CDJ-1000. Pioneer DJ CDJs have since become widely regarded as the industry standard.

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Secure Digital in the context of Cyber-shot

Cyber-shot is Sony's line of point-and-shoot digital cameras introduced in 1996. Cyber-shot model names use a DSC prefix, which is an initialism for "Digital Still Camera". Many Cyber-shot models feature Carl Zeiss trademarked lenses, while others use Sony, or Sony G lenses.

All Cyber-shot cameras accept Sony's proprietary Memory Stick or Memory Stick PRO Duo flash memory, except the DSC-MD1 which only accept MiniDisc. Select models have also supported CompactFlash. Current Cyber-shot cameras support Memory Stick PRO Duo, SD, SDHC, and SDXC. From 2006 to 2009, Sony Ericsson used the Cyber-shot brand in a line of mobile phones.

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