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Digital camera memory is an essential and often overlooked piece of digital photography equipment. There are many types of memory and it's a good idea to consider what type of memory a camera uses before you buy your first digital camera. It's also important to make sure you have enough memory before you take pictures of an important event or leave for vacation. Although memory cards are reusable, they don't have a limitless capacity and it's always good to have more than you actually need. www.rihey.cc
Most digital cameras come with very low capacity memory cards. If you're shopping for your first digital camera make sure to budget for an additional card. It's a safe bet that the card that comes with your camera is woefully inadequate. And as camera megapixel counts grow, higher capacity memory cards become necessary. I started out with two 64 meg cards and now I have two 1 gigabyte and three 256 megabyte cards. www.rihey.cc
Most camera manufacturers publish tables on their Web sites to show how many images you can save on their included memory card. There is no fixed rule for the number of photos you can put on one card because different image file types, different amounts of compression, and image content all affect the size of each file. But the manufacturer's site is a good place to start when you decide how much memory you want. As a general rule, I'd recommend at least a 256 megabyte or two 128 megabyte cards if you're buying a 3-5 megapixel compact digital camera. If you want to shoot lots of high resolution TIFF or RAW files, then you'll probably want to look at 512 megabyte and 1 gigabyte cards. It's also a good idea to not save all of your photos on one card. There's always the possibility that cards can get corrupted, lost, or stolen. Using more than one and switching during a shoot protects your valuable photographic data. www.rihey.cc

Vendors and solution providers at the 12th Annual International IC-China Conference & Exhibition (IIC-China) demonstrated their MP3s, MP4s and digital photo frames with a new function and certified sell-point—Bluetooth. www.rihey.cc
Excelpoint Systems showcased its updated Bluetooth MP3/MP4 developed based on a CSR chip. Excelpoint engineers said, "These MP3/MP4 players with Bluetooth will bring some new application models and new experience to consumers." For example, when a customer is listening to his MP3 player and an incoming call comes, he does not need to take out his cell phone to talk, instead, he can talk directly via the Bluetooth-based MP3 and caller ID can be displayed in the MP3 panel. www.rihey.cc
The engineers explained that the application demands MP3 to integrate two new functions: Bluetooth Advance Audio Distribution Profile (A2DP) and Bluetooth HandProfile (HFP). The first one is a specification defined by Bluetooth SIG for transmitting stereo music via Bluetooth, while the second is a new specification targeted at handsfree phones. The two functions improve audio quality and connection reliability to allow two audio packages to be transferred at the same time. www.rihey.cc
austriamicrosystems demonstrated a Bluetooth MP3 reference design composed of its two MP3 processors—AS3525 and AS3527—combined with CSR's BlueCore4-ROM. It also integrated CSR's BlueCore Host software into its ARM9 processor to run new Bluetooth specifications such as A2DP and AVRCP profiles. This added function will allow consumers to support Bluetooth home media entertainment system via the Bluetooth stereo earphone. www.rihey.cc
Even in the emerging digital photo market, the same trend was observed. The latest innovation in the digital photo frame seen during IIC-China was the addition of Wi-Fi, Bluetooth and USB on-the-go (OTG) functions. These features allow various ways to get photos. Through the Bluetooth interface, users can download photos from a camera without connecting to a PC. Customers will also be able to transfer pictures in PC to a digital photo frame via Wi-Fi, and get data from camera via USB OTG. www.rihey.cc
Besides adding wireless connection function, the resolution of digital photo frames also improved. A SigmaTel executive said the digital photo frame they demonstrated used the STDC7150 processor with a resolution up to 800 x 600. "Digital photo frame is growing in popularity because the price has been accepted by customers. For example, the price for 7inch digital photo frame in the United States has dropped down to about Rs.4,412 ($100). China market is starting to accept digital photo frame, however the current price is a little higher than that in the United States."
This article from www.eetasia.com

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Every month, manufacturers unleash even more MP3 players to an increasingly confused public. Not only do these devices have wildly divergent features, but ongoing format wars mean the MP3 player you choose dictates where you can buy your digital music. These devices are anything but one-size-fits-all.

First, there's the question of design. A player can have every feature in the world, but if the design doesn't match your lifestyle or if the interface is impenetrable, you still won't enjoy it. You'll want to look closely at performance; sound quality and battery life can make or break a player, especially if you travel a lot or have the so-called golden ears of an audiophile.

Before you start checking out specific models, you should have a basic understanding of the types of MP3 players available. Note: all types of players mentioned below can play other formats besides MP3, such as WMA, ATRAC3, OGG, or AAC, but we still refer to them as MP3 players.
Types of players:
Hard-drive-based
Micro hard-drive-based
Flash-based
MP3 CD
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Hard-drive-based players
Most likely, a high-capacity player can accommodate every song you've ever purchased or ripped from a CD. Hard drives run from 20GB on up, and large players such as the 80GB Apple iPod can hold around 23,000 songs, assuming an average file size of 3.5MB per tune. Pros: They store all your music on one device. They also tend to have more features and larger screens and are overall easier to use. High-capacity players give you the best bang for your buck in terms of price per gigabyte (for example, $300 30GB iPod vs. $250 8GB iPod Nano).
Cons: These players are usually built around a 1.8-inch hard drive; thus, they are larger and heavier than the others. Also, hard drives have moving parts, so these players aren't ideal for strenuous physical activity. Finally, most use rechargeable batteries (usually lasting 8 to 20 hours per charge) that you can't replace yourself, so after several years, you might have to pay for a new model or pay to get the battery replaced.
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Micro hard-drive-based players
Straddling the line between full-size hard-drive-based MP3 players and compact, flash-based players, these models aim to give you the best of both worlds by using miniature hard drives (about 1 inch or less in diameter) with capacities of up to 12GB. So-called "micro drive" players are being largely phased out in favor of high-capacity flash devices, but you can still find compact hard-drive players such as the Creative Zen Micro Photo for sale online.

Pros: They're smaller and lighter than high-capacity players but still hold more tunes than flash-based models with the same price.
Cons: You get fewer megabytes per dollar than you do with a larger player, and these models have many of the same disadvantages of larger hard-drive-based units, including the moving parts that limit physical activity and nonremovable batteries that eventually wear out and need to be replaced. Luckily, many new micro drive-based players such as the Creative Zen Micro feature a user-replaceable battery.
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Flash-based players
The original MP3 player design, these have no moving parts and are known for their shockproof operation and ultracompact dimensions. Devices range in capacity from 32MB to 8GB, though most new players don't go below 512MB. SanDisk's MP3 line, for example, includes exclusively flash-based players.
Pros: Flash-based players are tiny. They also have no moving parts, so their batteries last longer, and you can jog, snowboard, or bungee jump with them without causing skipping or damage. Many flash players include lots of extra features such as voice and line-in recording.
Cons: The aforementioned extras can make flash players a bit harder to use, and they have the highest per-megabyte cost and max out at 8GB.
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MP3 CD players
These look just like portable CD players, except they can read data CDs filled with digital music. You can burn approximately 150 MP3 songs (10 albums) on one 650MB disc. But if you want to take your CD collection with you, no worries--these devices can play standard CDs, as well.
Pros: These are the least expensive of all types of MP3 players, and they use incredibly cheap replaceable media (CD-R/RW discs).
Cons: They're large and can skip when jostled.
This article from http://reviews.cnet.com