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Logisim Circuit Snippets

A collection of funny, nerdy circuits for Logisim. These digital circuits have been written during my course in Structured computer organization (1st Semester, 2014) based on the reference work from Andrew S. Tanenbaum.

Hamming Distance

Calculates the hamming distance of two 4-bit input codes.

hamming_distance.gif

Animal Training

Homework Assignment: An "animal" needs to sit on every chair from A to C and hit the nearby button each time to get its final reward.

animal_training.gif

7 Segment Display

Binary to decimal 7 segment display.

7_segment_display.gif

1-Bit Execution Unit

Based on the famous Tanenbaum 1-Bit ALU design for the Mic-1 CPU.

1-bit_ALU.gif

4-Bit ALU

Chained 1-bit ALUs to calculate basic operations (add, sub, not, neg, inc, and, or, true, false) on two half-byte inputs.

4-bit_ALU.gif