5.8 Exclusive-OR Gates and Parity Circuits ReturnNext Exclusive-OR(XOR) Gates Exclusive-NOR(XNOR) Gates x ⊕ y=x · y+x · y x ⊙ y=x · y+x · y X Y Inputs x⊕yx⊕y x⊙yx⊙y Outputs
Equivalent symbols for XOR and XNOR gates NextBackReturn 5.8 Exclusive-OR Gates and Parity Circuits (a) XOR gates (b) XNOR gates Prove the upper symbols for XOR and XNOR is equivalent.
Parity Circuits (p413 Figure 5-74) NextBackReturn 5.8 Exclusive-OR Gates and Parity Circuits The 74x280 9-Bit Parity Generator (p414 Figure 5-75) A B C D EVEN E F ODD G H I 74X
BackReturn 5.8 Exclusive-OR Gates and Parity Circuits Parity-Checking Applications (p415 Figure 5-76) Parity Circuits are also used with error- correcting codes (p416 Figure 5-77)