mardi 23 février 2016

voice command using PIC 16f877A






voice command using  PIC 16f877A  using PIC 16f877







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vendredi 5 février 2016

Interfacing 7 Segment Display ccs and 16f877a






OBJECTIVE:

    • 7seg display
    • common anode
    • common cathode
    • Interception









COMPONENTS:

  • 1 7seg display common anode
  • 1 7seg display common cathode
  • 2 cap 22p
  • 1 quartz
  • 2 button
  • 2 resistance 220 hom




Discription:

1.The Common Cathode (CC) – In the common cathode display, all the cathode connections of the LED segments are joined together to logic “0” or ground. The individual segments are illuminated by application of a “HIGH”, or logic “1” signal via a current limiting resistor to forward bias the individual Anode terminals (a-g).


2. The Common Anode (CA) – In the common anode display, all the anode connections of the LED segments are joined together to logic “1”. The individual segments are illuminated by applying a ground, logic “0” or “LOW” signal via a suitable current limiting resistor to the Cathode of the particular segment (a-g).


Segment Display Segments for all Numbers.


7-segment Display Truth Table


CIRCUIT DIAGRAM:




CODE in this Video ;
























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