LED display control circuit diagram of a counter


Posted on Mar 28, 2007

As shown, in FIG a decimal seven storage - Decoding - drive unit 74 143, this unit has a constant output for all segments. Each at a voltage of 5V when the current is about 15


LED display control circuit diagram of a counter
Click here to download the full size of the above Circuit.

~ 22mA. Seven segment decoder BCD data can be removed from the 17 to 20 feet. 22 feet for a carry, that is, when the count value to 9 after the low, remaining high. Using this signal can control a counter. Figure b for controlling one or 1 1/2 digit seven-segment LED display circuit. SAB3211 as 4-bit binary counting. It may be needed before the next binary counter (FZJ151) or decimal counter (FZJ141). Supply voltage 9 ~ 16V.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    8 Channel software controlled for PC fan
    0,4 Watt FM transmitter
    radio transmission to get the GPS data
    DIY Binary Clock with Arduino
    port jtag cable buffered
    phone busy circuit
    Telephone Free Indicator
    Light that screen!
    Attenuating a feedback tone control circuit



    Top