Hello
I am having trouble designing a circuit for a 4 by 4 keypad. I am using a ring counter for my logic and connecting my rows and columns to a 74LS273 Latch to generate a key code. But I am not sure how to set up the key press detect part, I was going to use 4 AND Gates but I am not sure how to connect them to my circuit. Can anyone offer any suggestions
Thanks
I am having trouble designing a circuit for a 4 by 4 keypad. I am using a ring counter for my logic and connecting my rows and columns to a 74LS273 Latch to generate a key code. But I am not sure how to set up the key press detect part, I was going to use 4 AND Gates but I am not sure how to connect them to my circuit. Can anyone offer any suggestions
Thanks