IC Selection
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Hi all. I am using a CD4040BE(12-stage binary counter) microchip for
a counter that runs a 10-segment bar graph display, and a 555 Timer
to give the IC clock pulses. The only problem is the IC only counts
upwards. Is there a better one that does the same thing except counts
upwards and downwards?
I also want to connect four 7-segment displays to the IC so a
binary number appears on the 10-segment display and the same number
in decimal appears on the 7-segment displays. Is there a good IC to
convert the binary number to decimal and display it on the four 7-
segment displays? Hope this makes sense.
Thanks
a counter that runs a 10-segment bar graph display, and a 555 Timer
to give the IC clock pulses. The only problem is the IC only counts
upwards. Is there a better one that does the same thing except counts
upwards and downwards?
I also want to connect four 7-segment displays to the IC so a
binary number appears on the 10-segment display and the same number
in decimal appears on the 7-segment displays. Is there a good IC to
convert the binary number to decimal and display it on the four 7-
segment displays? Hope this makes sense.
Thanks
Comments
when the last LED comes on.
Original Message
> Hi all. I am using a CD4040BE(12-stage binary counter) microchip for
> a counter that runs a 10-segment bar graph display, and a 555 Timer
> to give the IC clock pulses. The only problem is the IC only counts
> upwards. Is there a better one that does the same thing except counts
> upwards and downwards?
CD4511 is a BCD (4 bit input ) to 7 segment decoder /driver.To driver a
bargraph with 4 bits inputs from counter you will need a CD4028 (just 1
led lit each time).In this case bargraph also will go down.
ACJacques
sjohns10@h... wrote:
>
> Hi all. I am using a CD4040BE(12-stage binary counter) microchip for
> a counter that runs a 10-segment bar graph display, and a 555 Timer
> to give the IC clock pulses. The only problem is the IC only counts
> upwards. Is there a better one that does the same thing except counts
> upwards and downwards?
> I also want to connect four 7-segment displays to the IC so a
> binary number appears on the 10-segment display and the same number
> in decimal appears on the 7-segment displays. Is there a good IC to
> convert the binary number to decimal and display it on the four 7-
> segment displays? Hope this makes sense.
> Thanks
>
>
>
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