After that connect the second clock pin Pin 2 with the output of timer or any other pulse generate to change the output. After that, we can use the IC to get the output on Pin 8, 9, 11 and Every JK Flip Flop output consider as the output bit which makes the total 4 bits here. Every JK flip flop gives only 1 and 0 states. This four flip flop circuit in series while receiving the clock pulse from previous output makes the output to start from to and then come back to after reaching once. Every binary bit will represent the number of a binary decimal and it will happen in series.
The timing diagram of all output signals from Q0-Q3 on every edge of the clock signal is shown here. In this example, we will use the IC to count the binary counting. First design the circuit in proteus with logic states.
We are going to use the momentary action logic input for clock input. When we will give the clock pulse to the IC it changes the output to the further binary number. This process will happen in the series. Whenever we change the pulse to the circuit the input changes to the next number. This process will happen continuously from to and then again from until we are changing the clock pulse. This decimal counter counts from zero to nine. Although, 74LS93 is a 4 bit counter and it can counter from in binary and we can use two seven-segment displays to show counter values.
We have used only one 7-segment display in this example. Therefore, we have to reset the counter states after it reaches to binary value 9. To resolve this, counter reset its states right after it counts up to nine. Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search.
In simulation it always ends in transient state, so I guess there are some metastability issues that I don't understand, but I spent long hours on it and couldn't make it work. What do I need to do, to make it work correctly? This is fundamentally a bad approach for an FPGA design. FPGAs and their design tools are highly optimized to support synchronous logic, in which all of the FFs in a given module are clocked directly by a single common clock. Special techniques are used to transfer signals from one clock domain to another.
Although the is called a "synchronous counter", it is a very loose application of the term. If you look at the internal implementation in any data book, you'll see that every FF in it has a unique clock. And the "clear" and "load" functions are asynchronous, not synchronous. Duplicating the exact function of just one of these chips in an FPGA is going to be a messy proposition at best, and trying to build more complex circuits using them will be even worse.
If you must do this project using schematic entry rather than HDL, then you would be much better off using 7 separate FFs, an 8-bit register such as a , or even a truly synchronous counter like the Sign up to join this community.
The best answers are voted up and rise to the top. Divide by N clock. Chapter 5 counter. De lab manual. Prac 4. Related Books Free with a 30 day trial from Scribd. Related Audiobooks Free with a 30 day trial from Scribd. Elizabeth Howell. Priyanka Dhakne. Sherif Anis , medical equip engineer at Tec. Ahmad Abu Obaid. Elakkiya Shanmugasundaram. Yashvant Kathiriya. Jay Johnston. Show More. Views Total views.
Actions Shares. No notes for slide. Binary up and down counter using IC 1. Pin Diagram of IC 6 7. Simulation design count up 7 8. Simulation design count down 8 9. Procedure 1.
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