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Semiconductor and Electronics

Semiconductor and Electronics Notes for Class 11 - 12 Learning Outcomes Explain band theory of solid materials Explain conductor, non-conductor, and semiconductor by band theory Explain intrinsic and extrinsic semiconductors Explain the concept of electron and hole in semiconductors Explain the p-type and n-type semiconductor Explain the construction and function of the junction diode Explain rectification Explain the construction and function of a junction transistor Explain the use of transistor as amplifier and switch Explain conversion of a different number system Explain Binary operation Analysis of the program of different logic gate Explain band theory of solid materials Energy Band:   There is a slight difference in the energy of electrons revolving in the same orbit in an atom of any matter. The range between the maximum and minimum energy level of these electrons situated in the same orbit is called the energy band. The energy level and energy band are not the same. The energ

What is a blue alert?

What is a blue alert?

Blue Alerts are designed to speed in the apprehension of violent criminals who kill or seriously wound local, state, or federal law enforcement officers. During a Blue Alert, the public receives information regarding the suspected assailant, facilitating tips and leads to law enforcement.

On August 18th, 2008, Government Rick Perry signed Executive Order RP-68, creating the state's Blue Alert program. 

Blue Alert is the second stage of alert (as for a threatened air attack or an approaching storm) during which emergency preparations are carried out according to plan.

The below represents Blue Alert criteria for the state's network:

  • A law enforcement officer must have been killed or seriously injured by an offender.

  • The investigating law enforcement agency must determine that the offender poses a serious risk or threat to the public and other law of enforcement personnel.

  • A detailed description of the offender's vehicle, vehicle tag, or partial tag must be available for broadcast to the public. 

  • The investigating law enforcement agency of jurisdiction must recommend the activation of the Blue Alert to the Texas Department of Public Safety (DPS).


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