NAND Gate Experiment

Student Information

Part 1. Objectives

• To verify experimentally the proper operation of a **NAND gate**.
• To use a **NAND gate as an inverter**.
• To demonstrate that the **NAND gate is a universal gate**.

Part 2. Equipment and parts required:

• 1 triple 3 – input NAND gate, '10
• 1 power supply, 5V DC
• 1 VOM

Part 3. Procedure

1. Record here the exact device you are using.
2. Examine the data sheet for a **'10 IC**. Note the value of Vcc required and the maximum required supply current Icc
Vcc: Icc:
3. Apply power to the '10 proper operation of one of the 3 – input gates by measuring the output voltage level for each of the eight input – signal combinations shown in Fig. 1 Use input voltage levels of 0 = 0V dc, 1 = +5 V dc, and use the measure output voltage levels to complete the truth table below.

A	B	C	x
0	0	0
+5	0	0
0	+5	0
+5	+5	0
0	0	+5
+5	0	+5
0	+5	+5
+5	+5	+5

4. Connect the 3 inputs on one of the gates together so it can be used as an inverter. Verify that the gates operates as an inverter by applying 0 V dc, and then +5 V dc to the input and recording outputs.

A	x
0 V dc
+5 V dc

5. Determine whether or not a 3 - input NAND gate will function as an inverter if 2 of the inputs are left unconnected and the third is used as a single output
6. Connect two of the NAND gates shown in Fig 2, and complete the truth table below to verify operation as an OR function.

A	B	Output
0	0
0	+5
+5	0
+5	+5

7. Connect three of the NAND gates shown in Fig 2, and complete the truth table below to verify operation as an OR function.

A	B	x
0	0
0	+5
+5	0
+5	+5

Part 5. Questions