EE 261 – Introduction to Logic Circuits Module #6 Page 5 Decoder Decoder Structure - The output stage of a decoder can be constructed using AND gates - Inverters are needed to give the appropriate code to each AND gate - Using AND/INV structure, we need: 2 n AND gates n Inverters A BY3 Y2 Y1 Y0 0 00 0 0 1 0 10 0 1 0 1 00 1 0 0 1 11 0 0 0 Showing more inverters than necessary to illustrate concept 1 A B 0 Y0 = A'·B' 0 2 0 1 0 3 01 0 1 0 A B 0 Y1 = A'·B 0 2 1 1 0 3 01 0 1 0 A B 0 Y2 = A·B' 1 2 0 1 0 3 01 0 1 0 A B 0 Y3 = A·B 0 2 0 1 1 3 01 0 1
{"Image DocumentName": "Showing more inverters than necessary to illustrate concept", "Image ImageDescription": "Decoder. Decoder Structure - The output stage of a decoder can be constructed using AND gates - Inverters are needed to give the appropriate code to each AND gate - Using AND/INV structure, we need: 2n AND gates n Inverters A B Y3 Y2 Y1 Y A. B Y0 = A\u2019\u00b7B\u2019 A. B Y1 = A\u2019\u00b7B A. B Y2 = A\u00b7B\u2019 A. B Y3 = A\u00b7B Showing more inverters than necessary to illustrate concept.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}