Google I/O 2009 - Coding for Life -- Battery Life, That Is

Google I/O 2009 - Coding for Life -- Battery Life, That Is Jeffrey Sharkey The three most important considerations for mobile applications are, in order: battery life, battery life, and battery life. After all, if the battery is dead, no one can use your application. In this session, Android engineer Jeffrey Sharkey will reveal the myriad ways -- many unexpected -- that your application can guzzle power and irritate users. You'll learn about how networking affects battery life, the right and wrong ways to use Android-specific features such as wake locks, why you can't assume that it's okay to trade memory for time, and more. For presentation slides and all I/O sessions, please go to: code.google.com/events/io/sessions.html



http://www.youtube.com/watch?v=OUemfrKe65c&hl=en

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Drum hardware for a complete battery

A percussion is like a house well built, with a foundation and framework. This framework includes pedals, stand, tom, boards, tires, tow bars and racks. And the bases are the drum shells. All these together form the drum hardware. Just as a house can not be built without reason, and pillars, the drum is incomplete without the hardware, because it is a pillar of the entire series. Each of the hardware to play a different role.

Drum Hardware fundamentallyrefers to different types of classes, until the drums and cymbals. Let's start with the most important pieces, which play an important role in building the volume and tone.

The pieces of metal that are on the side of the drum, the cards are fixed. The main objective of the tunnels is the tire or the rim, which is fixed with the help of tie rods attach. Hoops above all, keep the battery in place and will be answered during the vote.

Coming to the drum shells, he refers to the materialused in the drum. As a beginner kit Linde or mahogany, but the kits are more expensive woods, along with efforts to improve the quality of sound.

Add the next piece of hardware, namely the pedals. They are different types as possible, chain drive single, double chain, strap, spring pedal, double pedal and pedal spring with platforms. Among these, the pedal double chain are more difficult and can take heavy foot. Even the pedals with dual-spring, are much better thansingle. The pedals are the high-end platform pedals, and are stronger. Therefore, a combination of double-stranded, double-spring and the foot is a hard pedal.

Other important pieces of hardware are the stands. Medium, the group is to create the right positioning. Types include:

- Stand Boom: the longest of the hardware that provides the boom is a simple positioning of the basin throughout the kit.

- Cymbal Stand: The hardware is notsupports only the basin, but also to maintain toms, cowbells and tambourines as well.

- Hi-hat stand: This is one of the essential elements of hardware. E 'as a stand straight plate, a spring that has been provided in order to open a bar, and includes the top-hat cymbal HELLO pedal connected. The basin is the clutch that a hole in the middle, where the bar is fit and well protected in the open position by a screw, connected. The drummer has both feet instead of the pedal in use HALLO-hatsto abandon the closed position, and just press the lever and the hat. And vice versa, has to do to return it in the open position.

- Snare Stand: a snare drum is played, most of the time and then you must have a solid snare. It 'best to use a double-braced snare drum, rather than with each tense, that light will be charged and move frequently.

Another important part of the drum hardware and tom. They are bigger than the property 14''und leg to stand on its own. Oncedrum is mounted, is mounted on the tom. It should be noted that the quality of the sound of the drum depends on the positioning of toms.

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