I solved it but I had to use 'two' NMOS transistors unlike the direction.
Wire an NMOS transistor so that when In is 1, the output is pulled to ground (0). When In is 0, the output should be unconnected (Z).
The way it's worded it sounds like you need 'an NMOS' ie a single one? So I messed around but then I remembered seeing gates made from two transistors in my dusty memory.
(edit) I see there _is_ a one transistor solution... I'm pretty sure I tried that though. :/
alt Hacker News
I solved it but I had to use 'two' NMOS transistors unlike the direction.
Wire an NMOS transistor so that when In is 1, the output is pulled to ground (0). When In is 0, the output should be unconnected (Z).
The way it's worded it sounds like you need 'an NMOS' ie a single one? So I messed around but then I remembered seeing gates made from two transistors in my dusty memory.
(edit) I see there _is_ a one transistor solution... I'm pretty sure I tried that though. :/