- **Adding AND gates to convert S-R flip flop to J-K flip flop**
To convert an S-R flip flop to a J-K flip flop, we need to add two additional AND gates to the circuit. This process involves using the inputs of the S-R flip flop to create the functionality of a J-K flip flop.
- **Explanation**
1. **S-R Flip Flop**: The S-R flip flop has two inputs - S (Set) and R (Reset). It can be in one of two states: Set (Q=1, Q'=0) or Reset (Q=0, Q'=1). However, it has a forbidden state where both S and R are high (Q=Q'=0). This can lead to unpredictable behavior.
2. **J-K Flip Flop**: The J-K flip flop also has two inputs - J (Jack) and K (Kilby). It can be in four states: No Change, Set, Reset, Toggle. The Toggle state is achieved when both J and K are high.
3. **Conversion**: By using two additional AND gates, we can convert the S-R flip flop to a J-K flip flop. The inputs J and K of the J-K flip flop are connected to the outputs of the AND gates. The inputs to the AND gates are the original S and R inputs of the S-R flip flop.
4. **Functionality**: When both J and K inputs are high, the J-K flip flop toggles. This behavior is achieved by using the AND gates to control the inputs to the flip flop based on the S and R inputs.
- **Conclusion**
By adding two AND gates to an S-R flip flop circuit, we can effectively convert it into a J-K flip flop. This modification allows for more versatile functionality and eliminates the issues associated with the forbidden state in the S-R flip flop.