622 Binary Counter
622 : Binary Counter
- Author: TJ Johnson
- Description: Binary counter that runs on internal 1Hz clock and outputs high logic on each of the outputs to light LEDS to show a binary representation of a counter. Note that upon boot, the lights might already be in some sequence as I could not figure out to issue a reset on the D Flipflops
- GitHub repository
- Open in 3D viewer
- View in Wokwi
- Clock: 1 Hz
How it works
The built in 1 Hz clock sends a pulse to a D Flip Flop array that counts in binary with outputs being hooked up to LEDs. Note that some of the flipflops might be in an unknown state so might be lit upon powerup. I could not figure out how to reset the D Flipflop upon powerup.
How to test
Simply power up the unit, and make sure you have at least one LED hooked up to the first output. You can connect up to 8 LEDS - for all of the outputs to show a binary counter.
External hardware
None other than the LEDs and possible resistors for each LED to limit current.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | LED Bit 1 | ||
| 1 | LED Bit 2 | ||
| 2 | LED Bit 3 | ||
| 3 | LED Bit 4 | ||
| 4 | LED Bit 5 | ||
| 5 | LED Bit 6 | ||
| 6 | LED Bit 7 | ||
| 7 | LED Bit 8 |