20090909-GatesCircuits

20090909-GatesCircuits - CSE115: Introduction to Computer...

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CSE115: Introduction to Computer Science I Dr. Carl Alphonce 219 Bell Hall alphonce@cse.buffalo.edu 1
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Announcements If this is your first class: print a syllabus from the course website hand in signature form next class Recitations start this week Cell phones off 2
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Today’s lessons A computer is a very simple machine. A computer manipulates voltages Gates are used to control voltage flow Circuits are combinations of gates A flip-flop is a circuit that remembers • But first… 3
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Name sign competition Put your signs out! 9:00 AM Jeff 1:00 PM Nina 3:00 PM Alicia 4
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physical vs. logical perspectives Physical reality: Logical view: WIRE Carries a HIGH voltage or a LOW voltage WIRE Carries a 1 or a 0 5
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Idea 6
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Controlling flow 0 7
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Controlling flow 1 8
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Two in a row? 0 9
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Two in a row? 0 10
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Two in a row? 0 11
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Two in a row? 1 12
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For which input values is output 1? For which input values is output 0?
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This note was uploaded on 02/13/2011 for the course CSE 115 taught by Professor Decker during the Fall '08 term at SUNY Buffalo.

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20090909-GatesCircuits - CSE115: Introduction to Computer...

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