Creating a clock pulse

The input signal will come from a keypad or other input device that we will attach to the microcontroller. From there, the switch will be turned on for a certain amount of time and then switched back to zero. These pulses will then go out of the microcontroller to AND gates to control Solid state relays which will then open voltage-controlled solenoid valves. Would this be possible to do with J-K flip flops or is there another way we can easily do this? Thank you again for all of your help.