up down counter circuit


Posted on Feb 7, 2014

This is the circuit diagram of a very simple up down counter that can be used of a large number of applications. The circuit is based on the IC CD40110BE which is a CMOS decade up/down counter. For ICs are used here. Common cathode seven segment display is connected to the 7-segment output of each IC. Display connected to the IC1 represents the low


up down counter circuit
Click here to download the full size of the above Circuit.

est number and display connected to IC4 represents the largest number. Synchronous counting is achieved by connecting BORROW and CARRY pins of the preceding stage IC to the CLK DOWN and CLK UP of the next stage IC. For UP counting trigger pulse must be given to the pin7 of IC1 and for down counting trigger pulse must be given to the pin9 of IC1. The RESET pins of all IC are shorted and they have to be connected to ground during normal operation. Connecting the RESET pins to positive supply using the switch S1 resets the counter.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Battery-splitter
    avr
    servo timer
    Schematics High Power LED mood Lamp PCB
    Electronic Ear for Lego RCX Module
    designing a phantom antenna power supply system
    Simple Direct Conversion Receiver
    Voice Link Over Spread Spectrum Radio
    Automatic tracking solar controller circuit
    Pure CL B amplifier circuit
    Telephone electronic lock circuit



    Top