PHYS345 Electricity and Electronics

Hints for 10/19 Assignment

Hint for 13-10

Note that ' is synonymous with the overbar, the Boolean representation for the NOT operation.

Your truth table might start out looking like this:
A  B   A'  C=
 AB 
D=
 A'B 
 C+D 
0 0  
0 1  
1 0  
1 1  

Hint for 13-11

Your truth table might start out looking like this:
A  B   C   B'   C'  D=
 BC 
E=
 C'B 
F=
 B'A 
 D+E+F   A+B 
0 0 0  
0 0 1  
0 1 0  
0 1 1  
1 0 0  
1 0 1  
1 1 0  
1 1 1  

Hint for 13-18

It would appear that the circuit was incorrectly drawn! Otherwise most of the gates are redundant...
x3  x2   x1   x3  x2 A=
 x3'x2'x1 
B=
 A 
 A+B 
0 0 0  
0 0 1  
0 1 0  
0 1 1  
1 0 0  
1 0 1  
1 1 0  
1 1 1  

Hint for 13-21

Pick names for the four inputs; suggestions would be H1, F1, H2, and F2, for height and flow, respectively, for the two tanks.

Consider using false (0) to indicate an acceptable sensor reading and true (1) to indicate a reading beyond an accepted level.


"http://www.physics.udel.edu/~watson/phys345/protected/exercises/hints/1019.html"
Last updated Nov. 3, 1999.
Copyright George Watson, Univ. of Delaware, 1999.