Computer Science Canada Counting to 15 with 7 segment displays? |
Author: | GreatPumpkin [ Wed Apr 30, 2014 1:58 pm ] |
Post subject: | Counting to 15 with 7 segment displays? |
Hey, does anybody know how to count past 9 using 2 7 segment displays ? |
Author: | Zren [ Wed Apr 30, 2014 3:43 pm ] |
Post subject: | RE:Counting to 15 with 7 segment displays? |
"Count"? What are you using to give input to the 7seg display? What's your current setup to count up to 9? A smartass might count in a different base than normal if the upper limit was the value 15. heh. |
Author: | Tony [ Wed Apr 30, 2014 4:01 pm ] |
Post subject: | RE:Counting to 15 with 7 segment displays? |
I'm guessing that there are two displays, each able to show 0-9. So 10 would be "display digit 1 and display digit 0". I'm not sure what the question here actually is. |
Author: | GreatPumpkin [ Thu May 01, 2014 1:15 pm ] |
Post subject: | RE:Counting to 15 with 7 segment displays? |
I made a 4 bit counter out of JK Flip Flops set to toggle. Each time I press the button, the number on the 7 seg increases. I want to make it so when it hits the number 10 or (1010) it it splits it onto the second 7 seg. So that for 10, there is a one displayed on the first 7 seg, and 0 on the second. For 11, a 1 on the first, and 1 on the second, up until 15. The question is how do you display a 4 bit binary number (2 digit decimal) over 2 7 seg displays? I need a system of splitting it up. I tried researching but absolutley every page I came across was about "Programming an Arduino or PIC for multidigit display". I don't know where to start, except with maybe a D-Flip Flop that triggers when the number hits 9.. From there I'm not sure, and searching the internet has only returned frustration. |
Author: | GreatPumpkin [ Thu May 01, 2014 1:35 pm ] |
Post subject: | RE:Counting to 15 with 7 segment displays? |
A thought I've had, make the counter max out at 9 then reset to 0, while at the same time setting a and extra bit to remember the 10's column. |
Author: | GreatPumpkin [ Sun May 04, 2014 10:08 pm ] |
Post subject: | RE:Counting to 15 with 7 segment displays? |
Anything? |
Author: | Nathan4102 [ Mon May 05, 2014 3:53 pm ] |
Post subject: | RE:Counting to 15 with 7 segment displays? |
You've already nailed it, havn't you? Have you attemped both your earlier guesses? |
Author: | GreatPumpkin [ Mon May 05, 2014 5:33 pm ] |
Post subject: | RE:Counting to 15 with 7 segment displays? |
I've attempted a simulated version, and it works fine, but it shouldn't take 5 bits to count to 15.. There's got to be a text book way of displaying two digits on 7 segs.. I've even found a textbook that has an activity where you hook a four bit counter up to a single 7 seg, but that doesn't help at all.. |
Author: | whoareyou [ Mon May 05, 2014 7:20 pm ] |
Post subject: | Re: Counting to 15 with 7 segment displays? |
Use AND/OR gates? If you have a 4 bit binary number ABCD (where A is the MSB and D is the LSB) then the 7 segment display should output 1 if A AND (B OR C) ... ? |