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Higher Technological Studies. Applied Electronics (Outcome 3) G. Plimer 2005. Applied Electronics (outcome 3). Basic Logic Gates. NOT. AND. OR. A. B. Z. A. B. Z. A. Z. 0. 0. 0. 0. 0. 0. 0. 1. 0. 1. 0. 0. 1. 1. 1. 0. 1. 0. 0. 1. 0. 1. 1. 1. 1. 1. 1.
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Higher Technological Studies Applied Electronics (Outcome 3) G. Plimer 2005
Applied Electronics (outcome 3) Basic Logic Gates • NOT • AND • OR A B Z A B Z A Z 0 0 0 0 0 0 0 1 0 1 0 0 1 1 1 0 1 0 0 1 0 1 1 1 1 1 1 1
Applied Electronics (outcome 3) Basic Logic Gates • NAND • NOR • EOR A B Z A B Z A B Z 0 0 1 0 0 1 0 0 0 0 1 1 0 1 0 0 1 1 1 0 1 1 0 0 1 0 1 1 1 0 1 1 0 1 1 0
Pupil Problems 1 • Applied Electronics Work Book Outcome 3, Page 6 Questions 1 to 9 http://www.islay.argyll-bute.sch.uk/subjects/tech/ts/higher/Electronics/ASSIGNMENT3-2.htm
Combinational Logic • It is often necessary to use more than one gate in a logic circuit. In these cases, we need to analyse a Combinational Logic circuit. A B C D Z 0 0 0 0 0 0 0 1 0 0 A D 0 1 0 1 0 B Z 0 1 1 1 1 1 0 0 1 0 C 1 0 1 1 1 1 1 0 1 0 1 1 1 1 1
Pupil Problems 2 • Applied Electronics Work Book Outcome 3, Page 12 Questions 1 to 5
Nand Equivalents 1 Integrated Circuits, (IC’s) come in varying packages. The one shown below is a Quad, 2 Input, Nand IC. In industry, it is common to restrict the number of IC’s used. This reduces cost, stock levels and assembly requirements.
Nand Equivalents 2 NOT OR AND
Converting to Nands Original Circuit NOT = AND = Substituting NANDS
Pupil Problems 3 • Applied Electronics Work Book Outcome 3, Page 18 Questions 1 to 4 http://www.islay.argyll-bute.sch.uk/subjects/tech/ts/higher/Index.htm