BitWise

Building circuits

BitWise is a PC puzzle game about electricity and the machines built from it. You place components on a bench, wire them by hand, then test the circuit in a simulator. The grader checks what the circuit does rather than matching it to a fixed answer: if current reaches the lamp, it lights. Some levels ask you to predict an output before testing, and hints range from a nudge to a full build.

From gates to computers

Parts you build can be sealed as reusable chips and carried into later levels. Make an XOR from NAND gates, then combine an AND gate with it to build a half adder. Cross two gates to make a latch; add a clock to make a flip-flop. Those flip-flops can form a counter. Later benches use an ALU and program ROM in a machine that must follow orders and halt itself.