The circuit is shown above. C1, R1 are power-on reset circuits, and K is a start/stop switch. The IC uses AT89C2051. Its P1.O and P1.1 ports are also the input terminals of the internal comparator. In order to ensure the normal operation of the program, an external pull-up resistor is req.......
On the 17th, it was learned from the Nanchang Science and Technology Bureau that Nanchang City will promote the demonstration and application of more than 300 energy-saving and new-energy vehicles in public areas such as public transportation, rent.......
There are some high-brightness LED chips on which the positions of the two electrodes of pn are close to each other, which improves the luminous efficiency and heat dissipation capability of the chip.
From the evolution of the chip, it .......
LED material
LED is called Light Emitting Diode. Chinese is a light-emitting diode. It is a solid-state semiconductor device that can directly convert electrical energy into visible light. Compared with traditional light sources, LED.......