HP (Hewlett-Packard) 50g ユーザーズマニュアル

ページ / 887
Page 21-45
Logical operators
Logical operators are logical particles that are used to join or modify simple 
logical statements.  The logical operators available in the calculator can be 
easily accessed through the keystroke sequence: „°
 @)TEST@   L.
The available logical operators are: AND, OR, XOR (exclusive or), NOT, and 
SAME.  The operators will produce results that are true or false, depending on 
the truth-value of the logical statements affected.  The operator  NOT (negation) 
applies to a single logical statements.  All of the others apply to two logical 
statements.  
Tabulating all possible combinations of one or two statements together with the 
resulting value of applying a certain logical operator produces what is called 
the truth table of the operator.  The following are truth tables of each of the 
standard logical operators available in the calculator:  
p
NOT p
1
0
0
1
p
q
p  AND  q
1
1
1
1
0
0
0
1
0
0
0
0
p
q
p  OR  q
1
1
1
1
0
1
0
1
1
0
0
0