🔍 Key Concepts

• Recognize standard symbols for basic logic gates (AND, OR, XOR, NOR) • Note that bubbles (small circles) indicate logical inversion (NOT) at an input or output • Compare the shape of figure 3 to the shapes of the other gates in the illustration (1, 2, 5, 6)

💭 Think About

• Which gate symbols in the figure have a curved front with a pointed output, and which have a flat front with a rounded output side? • Does figure 3 include any inversion bubble on the output like a NOR gate would? • Among the choices, which basic gate usually has a flat left side and a rounded right side without any extra curves or bubbles?

✅ Before You Answer

• Verify whether figure 3 has any small circle (bubble) on the output Y • Confirm the front edge shape of figure 3 (flat vs. double-curved) against the typical OR/XOR symbols • Match the figure 3 outline to the standard AND-gate symbol you’ve seen in basic digital logic diagrams before selecting your answer