Example Circuits
19 ready-made projects, from a single gate to a working CPU. Open one in the simulator, take it apart and rebuild it. Nothing is uploaded: every example runs in your browser, and you can save your own copy from Project → Save Offline.
Basics
Basic Gates
Start here: every gate with inputs you can toggle.
Decoders and Plexers
Multiplexer, demultiplexer, decoder, encoder and bit-selector examples.
Miscellaneous Elements
Splitters, tri-state buffers, adders, tunnels and the ALU in one project.
Sequential Elements
Flip-flops, latches and memories driven by a clock.
Subcircuits
A hierarchical design built from reusable subcircuit blocks.
Arithmetic
Arithmetic Logic Unit
A small ALU exercising the ALU element with mode selection.
16-bit Ripple Carry Adder
Four 4-bit full adders chained through their carry bits, fed by splitters.
Memory and I/O
Static RAM
Static RAM cells assembled from latches.
LED Matrix
Driving an RGB LED matrix from stored patterns.
String Display
Scrolling text on segment displays.
Machines
Traffic Lights
A traffic light sequencer built from counters and decoders.
Conway's Game of Life
Cellular automaton built from logic, one cell per tile.
Elevator Controller
Sequential logic that runs a multi-floor elevator.
Tic-Tac-Toe
A two-player tic-tac-toe game with win detection.
Computers
CPU Microprocessor
A microprocessor datapath with program memory.
16-bit uCISC Processor
A 16-bit processor implementing the uCISC instruction set.
8-bit CPU
A complete 8-bit CPU with registers, ALU and control logic.
SAP-1 Computer
A Simple-As-Possible computer (SAP-1) architecture.
Femto-4 Computer
A tiny 4-bit computer with its own instruction set.
