How to check own mobile number

airtel

                     

                   Dial - *121*9# and press call

Aircel 

                   Dial - *1# and press call

BSNL Mobile

                   

                   Dial - *123# and press call

IDEA

                   Dial - *789# and press call

Tata  Docomo

                   Dial - *1# and press call

Vodafone

                   Dial - *121*0# and press call

Nokia Phone's Orignal Battery Price In India

Nokia Batteries

Nokia Battery BL-5C - Rs.299    

 

Nokia Battery BP-4L - Rs. 750

Nokia Battery BL-5J - Rs. 500

Nokia Battery BL-4C - Rs. 370

Nokia Battery BP-6M - Rs. 530

Nokia Battery BL-5B - Rs. 499

Nokia Battery BL-4CT - Rs. 525

Nokia Battery BP-5M - Rs. 510

Nokia Battery BP-6MT - Rs. 999

Nokia Battery BL-5F - Rs. 590

Nokia Battery BL-4B - Rs. 560

Nokia Battery BL-4U - Rs.899

Nokia Battery BL-5CT - Rs. 995

Seven Segment Display Using CMOS IC CD4511

Circuit Diagram

                          

General Characteristics of CMOS IC CD4511 

• Supply: 3 to 15V, small fluctuations are tolerated.

• Inputs have very high impedance (resistance). All unused inputs MUST be connected to the supply (either +Vs or 0V), this applies even if that part of the IC is not being used in the circuit!

• Outputs can sink and source only about 1mA if you wish to maintain the correct output voltage to drive CMOS inputs. If there is no need to drive any inputs the maximum current is about 5mA with a 6V supply, or 10mA with a 9V supply (just enough to light an LED). To switch larger currents you can connect a transistor. 

• Fan-out: one output can drive up to 50 inputs.
      
• Gate propagation time: typically 30ns for a signal to travel through a gate with a 9V supply, it takes a longer time at lower supply voltages.
      
• Frequency: up to 1MHz, above that the 74 series is a better choice.
      
• Power consumption (of the IC itself) is very low, a few µW. It is much greater at high frequencies, a few mW at 1MHz for example. 

7 Segment Display

Truthtable

                                             D    C    B    A      OUTPUT

                                              

                                              0    0    0     0            0

                                              

                                              0    0    0     1            1

                                             

                                              0    0    1     0            2

                                      

                                              0    0    1     1            3

                                            
                                              0    1     0     0           4
                                      
                                              0    1     0     1           5
                                
                                              0     1    1     0           6
                                      
                                                   0    1   1    1         7
                                   
                                                  1     0   0    0         8
           
                                                  1     0   0    1         9

                                                  1     0   1    0         a
                                     
                                                  1     0   1    1         b
        
                                                  1    1   0    0          c

                                                  1    1   0    1          d

                                                  1    1   1    0          e

                                                  1    1   1   1           f

Reset Codes for Samsung Android Phones

Samsung

Galaxy Y

• Power Off the phone and reinstall battery
• Press and hold Middle key + PWR ON + Volume UP key
• Select Wipe Cache 
• Then select Factory reset

Secret Menu For All Samsung Android Phones

1.  *2767*3855#

Galaxy Pop

• Power Off the phone and reinstall battery
• Press and hold Middle key + PWR ON
• Select Factory reset

Galaxy Fit 

• Power Off the phone and reinstall battery
• Press and hold Middle key + PWR ON + Volume UP key
• Select Wipe Cache 
• Then select Factory reset

Galaxy Ace 

• Power Off the phone and reinstall battery
• Press and hold Home key + Power/ Lock key
• Select Factory reset from the menu

Galaxy SII

 

• Power Off the phone and reinstall battery
• Press and hold Volume Down  + Home Keys
• Press and release PWR key
• Select clear storage by volume down key
• Press and release PWR key
• Press volume up key to confirm