Just your basic 2-bit adder.

Binary Counter

synchronous binary counter

A binary to 7 segment counter, pretty cool! (FINALLY, 5 DIGITS)

Full adder,4-bit Binary Adder-Subtractor

4-bit binary to BCD converter

a simple computer that does logic and counting.

commands:

01100: AND

00100: OR

10000: XOR

01010: count from 0-9

This is a 2 bit counter using d flip-flops that skips 0. The sequence is 1, 2, 3, 1, 2,... .

A simple binary calculator.

4-bit binary counter built on D flop-flops. If CLK MODE is high, counter increments on negative-going edge, otherwise it increments on positive-going edge

A binary to hexadecimal converter.

thermocode to binary converter with bubble error correction (inputs are inverted, so 1111 is binary 00)