First question is about this:
http://img14.imageshack.us/img14/8672/13249405.jpg
I'm only concerned with part a... no need for the truth table, I guess my question is regarding equation manipulation
The equation I get, which was marked right for me was
Z = NOT(A + (NOT(A)*B) + (B*C))
Kind of hard to see from that, but its A + AB + BC with a line over the whole thing to not it, as well as a small not line over just the A in the AB term.
However in the back of the book it is Z = NOT(A+B) which comes up with the same outputs as my equation in the truth table.
Apparently some simplification was done using Demorgan's Theorem or something so I was wondering if someone could easily spot how to simplify it
Second question
I forgot how to do the following problem
http://img14.imageshack.us/img14/8229/84474254.jpg
I remember it has something to do with N amount of resistors in parallel R/N is the equivalent R, so as N goes to infinity the effective (total) resistance goes to 0.. and this is contradictory to what I might have thought, i.e. more resistors = more power consumed... so in this case more resistors = less power consumed? somethin' like that
http://img14.imageshack.us/img14/8672/13249405.jpg
I'm only concerned with part a... no need for the truth table, I guess my question is regarding equation manipulation
The equation I get, which was marked right for me was
Z = NOT(A + (NOT(A)*B) + (B*C))
Kind of hard to see from that, but its A + AB + BC with a line over the whole thing to not it, as well as a small not line over just the A in the AB term.
However in the back of the book it is Z = NOT(A+B) which comes up with the same outputs as my equation in the truth table.
Apparently some simplification was done using Demorgan's Theorem or something so I was wondering if someone could easily spot how to simplify it
Second question
I forgot how to do the following problem
http://img14.imageshack.us/img14/8229/84474254.jpg
I remember it has something to do with N amount of resistors in parallel R/N is the equivalent R, so as N goes to infinity the effective (total) resistance goes to 0.. and this is contradictory to what I might have thought, i.e. more resistors = more power consumed... so in this case more resistors = less power consumed? somethin' like that
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