Lecture 21

Lecture 21 - ECE52 Spring 11 Lecture 21 3/2/11 Exam...

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ECE52 Spring 11 Lecture 21 3/2/11 Exam Schedule: Thursday 9-12 1
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2 What will we build with these things? Registers and other memory Counters Finite state machines!
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3 Electronic lock (sequence recognizer) want a circuit with 3 buttons that recognizes pattern 3-2-1 – activates solenoid to unlock door when received. initial 1,2,-/- 3/- first_ok 1,3/- second_ok 2/- 2,3/- 1/Solenoid_on “State Diagram” for a Mealy-type Finite State Machine call them I,F,S For now, can’t push more than one button at a time! -/- -/-
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Electronic lock (sequence recognizer) want a circuit with 3 buttons that recognizes pattern 3-2-1 – activates solenoid to unlock door when received. initial 1,2,-/- 3/- first_ok 1,3/- second_ok 2/- 2,3/- 1/Solenoid_on State Diagram” for a Mealy-type Finite State Machine call them I,F,S For now, can’t push more than one button at a time! -/- -/- Technical detail: probably want to recognize button being released – why? or else have button push generate a pulse
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Lecture 21 - ECE52 Spring 11 Lecture 21 3/2/11 Exam...

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