Hello!
In my electronics class we have been tasked with creating a digital clock using only TTL logic. The attached file is my final design except instead of a waveform generator, we used a 74HCT4060 chip that has an oscillating function. Pin 12 (Master Reset) is grounded, 16 powered, 8 grounded, and pin 3 is used for our output for the second pulses which goes into every counter chips' clock input. Right now I have a .1uF capacitor (Code 104), a 3.3 Ohm resistor for RS, and a 2K Trim-Pot resistor for Rtc. I don't exactly understand how this oscillator chip works.
Basically when my real solder board design is turned on, the oscillator randomly speeds up and slows down especially when I press any of the buttons. I had made those resistor and capacitor combination to make pin 7 have 1024 Hz (which means pin 3 has a seconds pulse). It worked until I pressed the buttons and now it's doing it more often.
Any ideas or suggestions anyone has will be greatly appreciated!
Thanks everybody!
In my electronics class we have been tasked with creating a digital clock using only TTL logic. The attached file is my final design except instead of a waveform generator, we used a 74HCT4060 chip that has an oscillating function. Pin 12 (Master Reset) is grounded, 16 powered, 8 grounded, and pin 3 is used for our output for the second pulses which goes into every counter chips' clock input. Right now I have a .1uF capacitor (Code 104), a 3.3 Ohm resistor for RS, and a 2K Trim-Pot resistor for Rtc. I don't exactly understand how this oscillator chip works.
Basically when my real solder board design is turned on, the oscillator randomly speeds up and slows down especially when I press any of the buttons. I had made those resistor and capacitor combination to make pin 7 have 1024 Hz (which means pin 3 has a seconds pulse). It worked until I pressed the buttons and now it's doing it more often.
Any ideas or suggestions anyone has will be greatly appreciated!
Thanks everybody!