Does it matter whether you place an inverter before or after a gate? In other words: is ‘NOT AND’ the same as ‘AND NOT’? Electronic car locks use 32 bit codes. If a trial takes 3 seconds, how long...

Does it matter whether you place an inverter before or after a gate? In other words: is ‘NOT AND’ the same as ‘AND NOT’?

Electronic car locks use 32 bit codes. If a trial takes 3 seconds, how long would an electronic ‘black box’ take to find the correct code by systematic search?