computer & electronics engineering
DESCRIPTION
Computer & Electronics Engineering. Objectives. Understand Digital Logic Gates Construct & Simulate Digital Logic Circuits on the Computer. Switches for Light Control. Page 13. Logic AND. 0. 0. 0. 1. 1. 0. 1. 1. AND Gate. Logic OR. 0 0. 0 1. 1 1. 1 0. OR Gate. - PowerPoint PPT PresentationTRANSCRIPT
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Computer & Electronics Engineering
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Objectives
• Understand Digital Logic Gates
• Construct & Simulate Digital Logic Circuits on the Computer
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Switches for Light ControlPage 13
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Logic AND
0 0
1 0 1 1
0 1
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AND Gate
A B OUT
0 0 0
0 1 0
1 0 0
1 1 1
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1 0
Logic OR
0 0 0 1
1 1
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OR GateA B OUT
0 0 0
0 1 1
1 0 1
1 1 1
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Automotive Reminder System
• Key in Ignition (K)• Door Open (D) • Seatbelt Disconnected (S)• Headlights On (H)
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Automotive Reminder System
• key AND door OR
• key AND seatbelt OR• light AND door OR
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Automotive Reminder System Page 15
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Automotive Reminder System Page 17
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How to Use Electronics Workbench
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Page 2
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Build and test these circuits. Try to complete Circuits 1, 3, 5 & 6.
Circuit 1: Wiring Residential SwitchesCircuit 2: Switches as Logic ElementsCircuit 3: Automobile Buzzer SystemCircuit 5: Integrated Circuit Form of Automobile
Buzzer SystemCircuit 6: Binary Counter – Seven Segment DecoderCircuit 7: Two Digit Binary CounterCircuit 8: Simplified Binary CounterCircuit 9: Four Digit Binary Counter
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Binary Count
B A Decimal
0 0 0
0 1 1
1 0 2
1 1 3
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Binary Count
C B A Decimal
0 0 0 0
0 0 1 1
0 1 0 2
0 1 1 3
1 0 0 4
1 0 1 5
1 1 0 6
1 1 1 7
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Binary
D C B A Decimal D C B A Decimal
0 0 0 0 0 1 0 0 0 8
0 0 0 1 1 1 0 0 1 9
0 0 1 0 2 1 0 1 0 10 (A)
0 0 1 1 3 1 0 1 1 11 (B)
0 1 0 0 4 1 1 0 0 12 ( C)
0 1 0 1 5 1 1 0 1 13 (D)
0 1 1 0 6 1 1 1 0 14 (E)
0 1 1 1 7 1 1 1 1 15 (F)
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Binary Coded Decimal (BCD)
D C B A Decimal
0 0 0 0 0
0 0 0 1 1
0 0 1 0 2
0 0 1 1 3
0 1 0 0 4
0 1 0 1 5
0 1 1 0 6
0 1 1 1 7
1 0 0 0 8
1 0 0 0 9
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7 Segment Displays
DCBA a b c d e f g0000 00001 10010 1 1 1 1 1 20011 30100 40101 50110 60111 71000 81001 9
Code Segments Digit
a
b
cde
f g
Display a “2”