3 ms·
Now you've got me thinking about a hash checking algorithm by weighing the punch cards hah
by taurath 7y ago
Now you've got me thinking about a hash checking algorithm by weighing the punch cards hah
- stillworks 7y agoInteresting thought. Weighing can add an extra level of indirection ! Thinking a bit more... the same can be done in software too ?
- dmurray 7y agoWeighing would only be slightly better than a simple parity check (a one-bit hash). It misses common errors like transposing two adjacent characters. However, you can get any number of additional bits by suspending the punch card from various locations along its perimeter, and measuring the angle at which it hangs.