0 to 999

1

123javed123

New Member
i m totally a newbie in this.
i doing enginnering (sem-IV)
i have to make a 7 a counter which counts from 0 to 999
by using three 7 segment display, 555 , 4026.
also can any one suggest me ic which produces diffrent diffrent frequencies through different pins and frequency should be double of previous one.
if ne 1 can help me then plz tell me
it will increase my termworks
plzzzzzzzzzzzzzzzz
 
If you connect a 555 to a CD4040 chip, each output will be half the previous one.
Or working backwards, each lower output will be double the previous one.

I have a circuit that counts to 999 using CD4026 IC's. Simply connect the outputs to a 7-segment display. You don't need resistors as the chips are current limiting.

Connect output pin5 of the first (the units chip) to pin 1 of the tens chip. Continue this for the hundreds chip.
 
Last edited:

Colin, surely you don't think you were detailed enough to satisfy him, do you?
I expect he wants a detailed schematic and parts list.
 
If you use a 4060 IC, you just need 2 resistors and a capcitor on pins 9, 10, 11 and the chip will clock.
 
See, not even a reply. Why waste time creating a circuit for someone that doesn't even reply.

That's why I prefer to deal with customers that pay up-front. No-one really respects you when you offer something-for-nothing.

I have experienced this for the past 40 years.
 
You must log in or register to reply here.

Similar threads

C
0-30V bench power supply
Replies
10
Views
2K
Chippiejnr
C
  • Question Question
parallel-to-serial problem
2
Replies
25
Views
3K
earckens
H
How to balance Milwaukee M18 tool batteries
Replies
8
Views
1K
HR19
H
L
  • Review Review
From Scrap to Sound: A 15-Year-Old's Journey to Build a Custom Speaker System
Replies
6
Views
1K
lithmal
L
H
  • Question Question
I need to trick a fluid sensor to return a full signal
2
Replies
24
Views
5K
hhoarder
H
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…