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Brbrmensch

simple adder (4 bit)

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so i've made 4 adders connected one after another to make a 4 bit adder (calculates sum of 2 numbers in a range from 0 to 15, giving result from 0 to 30)

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this one shows 3+7=10, 3 is 0011 on the lower left part and 7 is 0111 in the lower middle, result is outputted at the right part and shows 01010

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this one shows 1+11=12 (11 is hard to see due to lighting, but levers show that it's 1101)

so, the most annoying part of this is that you have to use 4 splitters for each adder, which is, as you can see, almost half of it, also size is not changeable and connecting is awkward with such small distances

trying to figure how to make 7-segment display now (or rather 13-pixel) for better output, my prediction is that i'll need more room for that than for adder itself

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Nice! Please make sure you let us know about any potential improvements we could make you can think of! ;) 

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well, i'd like to suggest 4 pretty common things first (in the order of importance, i guess):

relay, for more fun electronics,

any kind of getting information from the world without direct interaction (so, sensor): either pressure button or laser emitter+receiver,

some kind of signal delay item, maybe even with delay setting,

anything moving, like elevator or more doors

i understand that moving things will cause even more lag, which is not something people want, but making some automatic doors and light would be hella great

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