Everything You Wanted to Know About SDHC Memory Cards

SDHC (short for Secure Digital High Capacity) Memory Cards are the most popular form of external storage for cameras, camcorders, mobile phones, and a host of other electronic devices. An SDHC memory card can store high-definition photos, video and audio, and can easily be transferred from one device to another.

The SDHC memory card expands on the original SD specification, allowing for greater storage capacity beyond the 4 GB limit for SD cards. Although almost all newer devices will support SDHC cards without problems, note that many older devices built to the original SD specification will not handle SDHC cards.

Check with the manufacturer of your device to see if there is a firmware update available that will allow your device to use an SDHC memory card. Note that any device that supports SDHC will also support the older SD cards as well.

The SDHC memory card is available in sizes from 4GB to 32GB. It is available in three different sizes: SDHC, miniSDHC, and microSDHC. The mini and micro formats were created for use in smaller electronic devices, such as mobile phones. All sizes share the same capacity and minimum speed capabilities. SDHC cards use the FAT32 file system, which is the same used in older versions of Windows.

An SD-sized adapter can be used for the miniSDHC and microSDHC cards so they can be used in devices that accept only full-sized SDHC cards. Often, the adapter will be packaged with the card itself.

There are four speed classes available for the SDHC memory card: Class 2 allows for a minimum transfer speed of 2MB/s. This allows for standard definition video recording. Class 4 has a minimum transfer speed of 4MB/s, while Class 6 has a minimum transfer speed of 6MB/s. These speeds are applicable for high definition video recording.

The fastest speed class, Class 10, has a minimum transfer speed of 10MB/s and allows for full simultaneous HD recording. Check the instruction manual that came with your device to determine which speed class is appropriate for your device.

Some devices have an SDIO slot, which can take both SD and SDHC cards, as well as small devices such as GPS navigators, Bluetooth devices, network adapters, modems and a slew of other possible devices.

The SD specification is based on an older memory card standard called the MultiMediaCard, or MMC. Some devices that use SD cards can also read MMC cards. SD cards were manufactured to compete with the proprietary Memory Stick standard created by Sony. The SD format was created by SanDisk, Matsushita, and Toshiba, and was first introduced in 1999.

The next generation of SD cards, SDXC, has recently been introduced. SDXC cards can handle up to 2TB of data, with transfer speeds up to 100MB/s! It uses Microsoft’s exFAT filesystem for portable drives. The first SDXC cards have just begun to show up on the market. Like SD and SDHC cards, it is likely that SDXC cards will not be compatible with devices that only support the SDHC standard.



Source by Matthew Rizos

What Are The Disadvantages Of Using A Gaming Laptop?

Some people love using laptops but also like playing games. Most know that playing games on standard laptops doesn’t always give that great of performance. Because of this you might have the temptation to go buy a gaming laptop. While it sounds nice to have a laptop that could play high end games on it, you really should consider the disadvantages of these first.

These machines cost some serious money. They aren’t cheap at all. You could purchase a gaming desktop and a very good laptop for the same price as just one gaming laptop. You are really cutting out many options by investing this kind of money in hardware like this.

The weight of it is a huge problem. While you might think it’s portable because it’s a laptop, it really isn’t that portable. It will be too heavy to carry around all day. Additionally, you will need a gaming mouse to go along with it which adds to the weight and makes it more complicated.

The battery life of these machines are fairly worthless since it’s running high power hardware. You will be stuck near a plug if you want to do anything more than an hour of gaming. This really defeats the purpose of using a laptop. Most people purchase laptops so that they can be portable.

There is a huge risk with these laptops. The parts on them tend to go bad quickly. You will have to service the whole computer versus repairing a part or two yourself like on a desktop. This will also up the cost of owning this type of computer over the long haul.

You can’t upgrade that easily. As a gamer you know it’s best to have frequent upgrades. A gaming laptop will become old much faster than a desktop that you can upgrade. Most gaming computer laptops have most of the upgrades already installed when you purchase if you are serious about gaming. This limits future upgrades which would require you to purchase a new model in order to upgrade.

Heat will make it uncomfortable to use and eventually kill your hardware. There is a limited life span with these devices compared to a desktop that can deal with heat better while playing games.

A gaming laptop is something that many want to buy. Find out the disadvantages to this and why you might avoid buying a computer like this. Ask you friends if they think it would be a good investment before you go out and purchase one of these gaming laptops.



Source by Phil Reusch