Zuse Z3

Boots running the classic Z3 demo: it computes the hypotenuse sqrt(3² + 4²) = 5 in 22-bit binary floating point and lights the answer on the decimal lamp field, looping forever on the punched film. The amber cell on the film strip is the current instruction. Use the debugger to single-step one instruction, set a breakpoint on a film position, or watch a memory cell for writes. The other configurations wait for the operator keyboard: type a decimal number on the keypad and press START. The physical number keys, Enter (START) and Escape (STOP) work too.

Boots running the classic Z3 demo: it computes the hypotenuse sqrt(3² + 4²) = 5 in 22-bit binary floating point and lights the answer on the decimal lamp field, looping forever on the punched film. The amber cell on the film strip is the current instruction. Use the debugger to single-step one instruction, set a breakpoint on a film position, or watch a memory cell for writes. The other configurations wait for the operator keyboard: type a decimal number on the keypad and press START. The physical number keys, Enter (START) and Escape (STOP) work too.

Boots running the classic Z3 demo: it computes the hypotenuse sqrt(3² + 4²) = 5 in 22-bit binary floating point and lights the answer on the decimal lamp field, looping forever on the punched film. The amber cell on the film strip is the current instruction. Use the debugger to single-step one instruction, set a breakpoint on a film position, or watch a memory cell for writes. The other configurations wait for the operator keyboard: type a decimal number on the keypad and press START. The physical number keys, Enter (START) and Escape (STOP) work too.