• logic gates: http://shuding.github.io/css-computer/src/logic_gates.html
• full adder: http://shuding.github.io/css-computer/src/full_adder.html
• 4bit addition: http://shuding.github.io/css-computer/src/4bit.html
• flip-flop...?

2015, Shu Ding [email protected], MIT licensed.