Study uses of digital logic three gates chip ic #7408 7432 7404

STUDY OF LOGIC GATES INTEGRATED CHIPS CONNECTION PROCEDURE

 

The truth tables of {AND} {OR} {NOT} Gates using integrated IC [ integrated chips ]

 

Components Required:

Digital Logic Trainer kit

IC [ #7408,7432,7404 ]

[AND] [OR] [NOT] Connecting Wires and Power Supply.

 

1.) Verification of [ AND gate ]

Gate Symbol:

 

Logic Function[ F= A.B ]

 

Rules:

• If both the inputs are high(1)result is high(1) other wire the output is low (0)

 

Truth Table:

A	B	Y=A.B
0	0	0
0	1	0
1	0	0
1	1	1

 

 

Pin Diagram:

 

Connection Procedure:

• Insert IC #74LS08 in the Bread Bard.
• Connect pin #7 to Ground and pin #14 to power Supply (+5V).
• Connect pin #1 to First input switch A.
• Connect pin #2 to Second input Switch B.
• Connect pin #3 to any of the output switch Led.
• Switch on the power Supply.
• verify all input possibilities in the truth table.

 

2.) Verification of [ OR-gate ]:

Gate Symbol

 

Logic Function [ F=A+B ]

 

Rule:

• IF any one of the input is high (1) the result in high (1) Otherwise the result is Low (0).

Truth Table:

A	B	F=A+B
0	0	0
0	1	1
1	0	1
1	1	1

 

Pin Diagram:

 

Connection Procedure:

• Insert IC #74LS32 in the Bread Board.
• Connect Pin #7 to Ground and pin #14 to Power Supply(+5v).
• Connect pin #1to First input switch A.
• Connect pin #2 to Second input switch B.
• Connect pin #3 to any one of the output Switch Led.
• Switch [ ON ] Power Supply.
• Verify all input Possibilities in the Truth Table.

 

3.) Verification of [ NOT gate ]:

Gate Symbol

 

Logic Function [ F=A ]

 

Rule:

• IF the input in low(0) the output is high(1) if the input in high(1) the output is low (0).

 

Truth Table:

A	A_
0	1
1	0

 

Pin Diagram:

 

Connection Procedure:

• Insert IC #74LS04 to the Bread Board.
• Connect Pin #7 to ground and pin #14 to Power Supply (+5V).
• Connect pin #1 to first input Switch A.
• Connect pin #2 to any one of the Output Switch Led.
• THE   [ ON ] SWITCH   THE POWER SUPPLY.
  
• Verify all the input possibilities in Truth Table.