Digital Circuits for High School Students Part 1 Work Sheet

Digital Circuits for High School Students

Part 1 Work Sheet
Prepared by Charles S. Tritt, Ph.D.
July 18, 1997

Output Voltage Levels

	Expected	Observed
+5V
No Load Pulser Low
No Load Pulser High
Loaded Pulser Low
Loaded Pulser High

Comments:

LED Input Responses

Voltage

Target Actual LED Status

Initial Off

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0 Bright

Comments:

Truth Tables

Inverter or NOT (7404)
Input	Outputs (Y's)
A	Expected	Observed
0	1
1	0

AND (7408)
Inputs		Outputs (Y's)
A	B	Expected	Observed
0	0	0
0	1	0
1	0	0
1	1	1

Comments:

OR (7432)

Inputs Outputs (Y's)

A B Expected Observed

0 0

0 1

1 0

1 1

NAND (7400)

Inputs Outputs (Y's)

A B Expected Observed

0 0

0 1

1 0

1 1

Comments:

Simple Combinational Logic Circuit

Use the terms On, Off and Flashing to describe the tail light status.

Inputs Output

Turn Signal Hazard Brake Light

0 0 0

0 0 1

0 1 0

0 1 1

1 0 0

1 0 1

1 1 0

1 1 1

Inputs	Output
Turn Signal	Hazard	Brake	Light
0	0	0
0	0	1
0	1	0
0	1	1
1	0	0
1	0	1
1	1	0
1	1	1

Comments:

Voltage
Target	Actual	LED Status
Initial		Off
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0		Bright

Digital Circuits for High School Students

Part 1 Work Sheet Prepared by Charles S. Tritt, Ph.D. July 18, 1997

Output Voltage Levels

LED Input Responses

Truth Tables

Simple Combinational Logic Circuit

Part 1 Work Sheet
Prepared by Charles S. Tritt, Ph.D.
July 18, 1997