TV, clocks, radios, stereos, DVD player, CD player, BlueRay player, computers, cell phones, etc
If your compairing apples to apples like 3 watt leds to 3w leds then 128. The more leds the higher the power.
LEDS
Yes, LEDs are dimmable.
Basically, when LEDs are connected in parallel, the LEDs with the lowest resistance will be the brightest, the other LEDs will be dimly lit or not lit at all. Therefore, use LEDs with the same model number and colour.
home depo, sears, wal*mart. If they are indeed LEDs (Light Emitting Diodes) then any radio shack (or similar) will carry them. Make sure they are LEDs and not just 12Vdc incandescent bulbs. They are probably integrated into a circuit board, but can be replaced by using a soldering iron.
No.
red, green, yellow, blue leds
Most modern torches have LEDs in them, several newer models of Audis do too.
It depend on what the rating voltage of the LEDs are.
SemiLEDS Corporation (LEDS) had its IPO in 2010.
Resistors don't light up LEDs. They're required in a circuit along with LEDs in order to prevent excessive current through the LEDs when the LEDs are forward biased. The correct resistance value depends on the supply voltage and the desired (rated) current through the LEDs, and there's typically one resistor in series with each LED.
The difference is that LEDs use less electricity.