Helmut Neemann

And if an open-collector bus is to be used, it looks like this:  If you want to read, /out must be set to zero. And there must be a...

If you connect a wire to a +vcc terminal, you can never pull it down. Therefore the pull-up is necessary. Whether a pull-up is connected to a wire or not...

Remove the data input or set its default value to “high z”. If the input component outputs a value and the register also outputs a value, this leads to a...

Why not setting the number of data bits to 4?

If four data bits are configured in the d-ff, the data input is 4-bit wide, so a bus can be connected that is 4 bits wide.

Simply create a subcircuit that contains four d-ff.

Put this dig-file alongside your main circuit. [D-FF4.dig.zip](https://github.com/user-attachments/files/16645282/D-FF4.dig.zip)

see also #36

Thanks for pointing this out.