A way to condense 8 bits into 1 byte, which can travel with the data onto one wire, and have 1 byte inputs and outputs. There would also be condensers and expanders to turn 8 bits into a byte and the other way around.

An HDD to store data.

A black and white screen where you power the X and Y inputs and those coordinates get filled in with black.

An input, like a button, where it temporarily powers something for about a second before switching back.

A way to zoom out from the current perspective, would be useful for stuff like 16-bit or 32-bit computers that people might make.

It probably won't mater if the HDD( Hard disk drives ) was replaced with an EEPROM( Electrically Erasable Programmable Read-only Memory ).

Also the black and white screen could be replaced with a RGB( red, green and blue ) one's.

the button idea is absolutely possible like this:

inside the pulse chip:

the rest of the chips you should be able to find by just searching up their names

the multi-wire would be a lifesaver for me. it's possible to make a thing that uses a clock to encode a bunch of signals on one wire

and a synced clock on the receiving end to continously update the signals but the more signals on one wire the longer the potential delay before it updates on the receiving end

in this approach each bit will update every 16 frames, it's also possible to make a 4-bit multi-wire that updates every 4 frames, any other number of bits would be sub-optimal since the clock has 4 settings: every 4 frames, every 16 frames, every half second and every 1 second. also in case you can't see from the images each pulse chip activates the pulse chip below it

here's the modded version i made for more space: https://www.mediafire.com/file/nrry9bvscl2ki8f/DLS_%2528modded%2529.rar/file

W A S D - move

E - zoom in

Q - zoom out

i don't have any ideas for a screen but i'll definately post about it if i come up with something

an HDD is unfortunately impossible without modding the game, if you open one of the JSON files that store the chips, you can see that it only stores the subchips, their positions and all of the wire connections