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This lecture provides an overview of transistors and Boolean algebra in digital design and computer architecture. Topics covered include logic gates, logic levels and noise margins, CMOS gate structure, building two-input NOR and AND gates, and various forms of Boolean expressions. Karnaugh maps and X's and Z's are also explored.
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Transistors, Boolean Algebra Lecture 2 Digital Design and Computer Architecture Harris & Harris Morgan Kaufmann / Elsevier, 2007
Overview • Review • Beneath the digital abstraction • Transistors • Boolean expressions • Boolean algebra
Beneath the Digital Abstraction • Suppose: 5 V = 1, 0 V = 0 • What does 4.99 V = ?
NOR Gate How do you build a two-input NOR gate?
Other CMOS Gates How do you build a two-input AND gate?
Next Time • Combinational Logic • More Boolean Expressions / Boolean Algebra • Karnaugh maps • X’s and Z’s