Actually, it does. If a => b is false then a is true and b is false.
Perhaps you ought to read through the topic, as you've taken what I've said out of context and responded omitting quantifiers implied by "in general". Let's first give another example:
I am a human, but it does not follow that I have two legs. Some humans have zero legs, some have one leg, and some have more than two legs. In other words, "Is human => has two legs" is false in general.
It does not follow that no humans have two legs. In other words, "Is human => does not have two legs" is false.
Now, let's express it in general terms with quantifiers, if that helps you. I'll write the existential quantifier as There-Exists and the universal quantifier as For-All. Let P(x) denote property P applying to x. Let x be a member of the universe of discourse {a,b,c}.
Now, assume that P(a) is true but Q(a) is false. Then we can assert:
There-Exists x (P(x) and not Q(x)).
Thus the following assertion is false:
For-All x (P(x) => Q(x))
We cannot conclude from this that the following assertion is false:
For-All x (P(x) => not Q(x))
because there is nothing so far precluding the possibility that P(b) is true and Q(b) is true.
OK?
MorphingDragon said:
You obviously never took any electronics if you don't know the difference between Analogue, Digital and don't know what a radio looks like. There is no processing of data.
In what way is, say, the present voltage output from an IF circuit not a datum? In what way is retaining this information over a short time for slow AGC correction not (ephemeral) storage of that datum?
A computer can not be Analogue it can only be digital.
Are you trolling? You started off arguing via a commonly held misconception of computing students and practictioners, but now you're coming out with comments which suggest much less knowledge about technology. From a technician's PoV, analogue computing is
well defined and has a
history all of its own. Meanwhile, a layperson couldn't care less whether the computer uses discrete voltage levels or a continuous variation.