FOSS gamedev and creative worlds

I extended the ripple carry adder by two 4-bit registers and a clock generator. It counts form 0 to 15.

at night:


top view:


left the registers, right the ripple-carry-adder:


4-bit-ripple-carry-adder:


4-bit-registers:


Have Fun ;-)

Download: http://www.xup.in/dl,47932442/4-bit-counter.zip/

Very nice! However, a more compact way of making a counter (without microcontrollers, that is) is to use chained T-FFs, which eliminates the need for the ripple carry adder entirely.

With microcontrollers, you can make the 4-bit counter using the T-FF design with just 2 of them.