(i)Explain a logic truth table
(ii) Name two types of logic gate.
(ii) Using the two named logic gates in 4a(ii), complete the truth table in Table 1.
Table 1
| X | Y | Z = X ? Y | Z = X ? Y |
| 0 | 0 | ||
| 0 | 1 | ||
| 1 | 0 | ||
| 1 | 1 |
(b) Explain the term comparator as a logic device.
a(i)Logic truth table is a mathematical table used to evaluate the truth value of logical statements or arguments. It displays logical operations on input signals in table format.
(ii) Types of logic gate are:
I. OR gate II. AND gate III. NOT gate IV. NOR gate V. NAND gate VI. XOR gate XII. EXNOR gate
(iii)
| X | Y | Z = X + Y (OR) | Z = X - Y (AND) |
| 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 0 |
| 1 | 0 | 1 | 0 |
| 1 | 1 | 1 | 1 |
(b) Explanations of the term comparator as a logic device are:
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