Computer & Electronics Engineering. Objectives Understand Digital Logic Gates Construct & Simulate...
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Transcript of Computer & Electronics Engineering. Objectives Understand Digital Logic Gates Construct & Simulate...
Objectives
• Understand Digital Logic Gates
• Construct & Simulate Digital Logic Circuits on the Computer
Automotive Reminder System
• Key in Ignition (K)• Door Open (D) • Seatbelt Disconnected (S)• Headlights On (H)
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
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)
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