SD Memory Card
An SD card is a memory card that stores data from electronic devices.
Today, there are various electronic devices with slots that are accessible
with the cards, which store information in flash memory. It requires no
power to store data on the card. The card is editable and reusable, meaning
data stored in the card is not permanent. They are very small and portable;
they can be carried inside the devices like cell phones. They last about
a decade, and can store memory into the terabytes.
SD Compatible Products
A wide range of electronic devices such as mobile phones, digital cameras,
video recorders, computers, printers, game systems--all these and can
read and/or write to SD cards. Most of electronic devices that deal with
sound or images likely have a slot for an SD card. The card is compatible
between and can be shared with different products that has slot. This
way, digital photos can be transferred to computer.
Types of Data
SD cards can hold various kinds of data, and you can save those different
types of data such as audio, video, photography and documents on the same
card. Even though all these may be stored on a single card, a device can
only read the data it was designed to read. For example, a printer is
able to read to photos on an SD card, but not the videos. To find out
what data type a device can read, you have to check the specifications
of the product.
MiniSD, MicroSD and SD Cards
MiniSD, MicroSD and SD cards serve the same function: storing data. One
of the differences between them is in their sizes. SD cards are the largest
among them, measuring about 1 by 1¨ inches. The other two formats
are compatible with certain mobile phones. Converters exist that allow
SD-compatible devices to read the miniSD and microSD cards. Write protection
is only applied to large SD card. Write protection secures the data from
mistakenly overwrite new data on top of the old data. A locking slide
switch is on the SD card itself and when locked, the card becomes read-only.
SD Card Memory Capacity
Depends on the capacity of the SD card and the type of data desired to
be stored, the amount of data that can be hold in the SD memory card varies.
For example, the amount of data that your card can hold depends on the
memory capacity of the SD card, the type of data you want to put on it
and how the information is compressed. For instance, a 32GB card might
hold 320 to 720 minutes of a video, depending on the quality of the recording.
It is important get advice on choosing right memory capacity from the
manual supplied by the device in which you plan to use the SD.
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