Flip a row of bit switches to build the target value, then, in cascade mode, watch the carry ripple through a binary sum.
Each round shows a target. In Convert mode you set the switches so your binary value equals a number given in binary, octal, hex or decimal. In Cascade mode you add two binary numbers and set the switches to their sum. Solve six rounds before the clock runs out.
Bitwise is a fast number-systems trainer covering binary, octal and hexadecimal conversion and ripple-carry addition.
Setting switches so a value matches a number given in binary, octal, hex or decimal is place-value arithmetic in other bases — the binary number system, whose modern form Leibniz described in the seventeenth century and which became the substrate of computing.
Octal and hexadecimal are in here for the reason they exist: they are shorthand for binary, three and four bits per digit, so a programmer can read a machine word without counting sixteen ones and zeros.
The cascade mode is the useful half. Converting a number is a drill; watching a value propagate through shifts and masks is where you see why binary is the base a machine actually uses.
Bitwise is a fast number-systems trainer covering binary, octal, hex conversion and ripple-carry addition. It is an original, free browser game built in-house for PlayPendium.