3.4. AND-OR-INVERT circuit

We can build one more interesting circuit, that will give us justification to use TTL chip 7450 while building the Pong machine. The more complex function it performs on A, B, C, and D operands is the following:

Figure 3‑17 AND-OR-INVERT circuit with truth table

For the purpose of the AND-OR-INVERT circuit, we will use chip 7450 which contains two circuits.

Figure 3‑18 Chip 7450

The preceding figures are self-explanatory but we should mention that connections serve for the chip expansion, in order to create the circuit wider and enable it to create more complex functions with more operands, as follows.

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