guys i need a truth table for 0 to 99 count up!! - Electronic Circuits Projects Diagrams Free

jerkoy · 14th October 2009, 02:07 PM

guys please help me find a truth table for it!!! i need it badly!!!

colin55 · 16th October 2009, 09:16 AM

What do your really want? A TRUTH table or a LIE table? The truth is, you cannot get a truth table for a 00 - 99 counter. I would be lieing if I said you could get a truth table for a 00 - 99 counter.

Karkas · 17th October 2009, 05:08 AM

Well if you're talking about a counter made of JK flip flops by yourself, I think you can, if you go to the digital systems textbooks you can find that truth table but for a 0 to 9 counter, for example in Digital Fundamentlas by Thomas Floyd you'll see it for a synchronous counter, and that's what I think you're talking about, because if you make an asynchronous counter, you don't even need the table. Houwever, look for that table i told you, and let it guide you to make your table for the 0 to 99 counter, but let me tell you, that table maybe nasty, so if you only need to make the counter i recommend to use the asynchronous, because to stop the count at 99, you only have to connect that configuration (the 99 in binary) to a NAND gate and that to the CLR pin and that will reset the count. But if you make it synchronous, you really need the table to reset the count at 99.
Good luck.

By the way you'll need 7 JKs

Karkas · 23rd October 2009, 01:42 AM

Well, that's actually a transition table with a next state table.

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14th October 2009, 02:07 PM	#1
jerkoy	guys i need a truth table for 0 to 99 count up!! guys please help me find a truth table for it!!! i need it badly!!!

16th October 2009, 09:16 AM	#2
colin55	What do your really want? A TRUTH table or a LIE table? The truth is, you cannot get a truth table for a 00 - 99 counter. I would be lieing if I said you could get a truth table for a 00 - 99 counter. Last edited by colin55; 16th October 2009 at 09:18 AM.

17th October 2009, 05:08 AM	#3
Karkas	Well if you're talking about a counter made of JK flip flops by yourself, I think you can, if you go to the digital systems textbooks you can find that truth table but for a 0 to 9 counter, for example in Digital Fundamentlas by Thomas Floyd you'll see it for a synchronous counter, and that's what I think you're talking about, because if you make an asynchronous counter, you don't even need the table. Houwever, look for that table i told you, and let it guide you to make your table for the 0 to 99 counter, but let me tell you, that table maybe nasty, so if you only need to make the counter i recommend to use the asynchronous, because to stop the count at 99, you only have to connect that configuration (the 99 in binary) to a NAND gate and that to the CLR pin and that will reset the count. But if you make it synchronous, you really need the table to reset the count at 99. Good luck. By the way you'll need 7 JKs Last edited by Karkas; 17th October 2009 at 05:10 AM.

23rd October 2009, 01:42 AM	#4
Karkas	Well, that's actually a transition table with a next state table.