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This device compares two binary 8 bit numbers and sets the outputs for A>B, A=B and A
Red: A = B
Purple: A < B
Orange; A > B
Additional Notes
Blue: Inputs (light blue indicates LSB)Red: A = B
Purple: A < B
Orange; A > B
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1 Update Logs
Update #1 : by zaubara 07/23/2012 2:13:28 pmJul 23rd, 2012
Fixed the schematic, it was missing some redstone on the top.
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Really a nice device, I'm using it for conditional branching on my CPU.
I had to fix it on 1.2.5 though, missed some redstone wire on the top, but it works like it's supposed to now.
Neat :-)
I'll update the schematics!
The numbers that are compared are binary encoded (base-2, the number system computers work with, were you only have two states to represent a digit. The number system we normally use is base-10, the digits from 0-9).
You're right, you may use this circuit to make a simple (in meaning of not-so-safe) code lock, but its mainly used in electronic circuits that compute something, like a CPU.
Now image you have two sets of these lines.. each representing there own number.
..Well this device.. tells you which of the two sets of lines represent the largest number. OR, whether there the same.
Good circuit.