| Pin Number |
Pin Name |
Description |
|---|---|---|
| 1 | GND | ground |
| 2 | CLK | Clock |
| 3 | LATCH | signal latch |
| 4 | DATA | Data |
| 7 | +5V | power |
| 6 | NC | OMG |
| 5 | NC | OMG |
When this starts, the NES sends a 0 through the latch. It then clocks the controller.
when the clock is high, The 4021 checks if a button is pressed on bit 1, then sends a 1 if so. then it checks the next button on the next clock high.
correct
incorrect