I need some help with a problem I'm facing. I'm to design a 5-bit asynchronous counter in multisim using 74LS76 (JKs). Here's the catch. It must count from 9 (01001) to 27 (11011) continuously. When the circuit is started up, it has to start counting from "0". It only passes through "0" once upon initialization.
Now I've figured out how to count from 0 to 27, you just connect all the Q outputs to the next sequential JK flip-flop's clock input. Then connect the Q0,Q1,Q3 and Q4 outputs to a 4-input AND gate which is connected to each JK flip-flop's reset. When the count reachs 11011, the flip-flops get reset back to zero. I would like them to reset to nine AFTER the initial count starts at zero
Does anyone know how I can start the circuit at zero, then count from 9 to 27? I can't really get it to start counting on anything but zero. I know there's some logic gates involved here, but I'm not sure where their outputs go. I know this is complicated and my explanation may not be the best, but any help would be much appreciated, thanks.
Now I've figured out how to count from 0 to 27, you just connect all the Q outputs to the next sequential JK flip-flop's clock input. Then connect the Q0,Q1,Q3 and Q4 outputs to a 4-input AND gate which is connected to each JK flip-flop's reset. When the count reachs 11011, the flip-flops get reset back to zero. I would like them to reset to nine AFTER the initial count starts at zero
Does anyone know how I can start the circuit at zero, then count from 9 to 27? I can't really get it to start counting on anything but zero. I know there's some logic gates involved here, but I'm not sure where their outputs go. I know this is complicated and my explanation may not be the best, but any help would be much appreciated, thanks.