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App-12 IM 04L31A01-01E
AND
Logical Product
(Syntax) e1ANDe2
(Condition) If the two data values e1 and e2 are both non-zeroes, the computed
result is “1.” Otherwise, it is “0.”
(Explanation) e1 = 0
→ e1ANDe2 = 0
e2 = 0
e1 ≠ 0
→ e1ANDe2 = 0
e2 = 0
e1 = 0
→ e1ANDe2 = 0
e2 ≠ 0
e1 ≠ 0
→ e1ANDe2 = 1
e2 ≠ 0
OR
Logical Sum
(Syntax) e1ORe2
(Condition) If the two data values e1 and e2 are both zeroes, the computed result is
“0.” Otherwise, it is “1.”
(Explanation) e1 = 0
→ e1ORe2 = 0
e2 = 0
e1 ≠ 0
→ e1ORe2 = 1
e2 = 0
e1 = 0
→ e1ORe2 = 1
e2 ≠ 0
e1 ≠ 0
→ e1ORe2 = 1
e2 ≠ 0
XOR
Exclusive OR
(Syntax) e1XORe2
(Condition) If the two data values e1 and e2 are zero and non-zero or non-zero and
zero, the computed result is “1.” Otherwise, it is “0.”
(Explanation) e1 = 0
→ e1XORe2 = 0
e2 = 0
e1 ≠ 0
→ e1XORe2 = 1
e2 = 0
e1 = 0
→ e1XORe2 = 1
e2 ≠ 0
e1 ≠ 0
→ e1XORe2 = 0
e2 ≠ 0
NOT
Logical Negation
(Syntax) NOTe1
(Condition) The result is the inverse of the status of data e1 (zero or non-zero).
(Explanation) e1 = 0 → NOTe1 = 1
e1 ≠ 0 → NOTe1 = 0
Appendix 3 Meaning and Syntax of Equations