1. Slide Show A Short Note For Lecturer A Short Note For Lecturer Institute: Khanjahan Ali College, Bagerhat Subject: Computer Education (Theoretical) Class: Higher Secondary, 1st Year Chapter: 4, Part 2, Digital Logic Font: Sutonny MJ, Arial, Times New Roman Slides : 5/14 Navigation: (→↓ Next), (  ← Previous), (Esc Close) Institute: Khanjahan Ali College, Bagerhat Subject: Computer Education (Theoretical) Class: Higher Secondary, 1st Year Chapter: 4, Part 2, Digital Logic Font: Sutonny MJ, Arial, Times New Roman Slides : 5/14 Navigation: (→↓ Next), (  ← Previous), (Esc Close) Presented By Md. Mostafizur Rahman Lecturer, Computer Education Contact No: +8801718976860, +8801915566977 E-Mail : mostafiz2000@gmail.com Presented By Md. Mostafizur Rahman Lecturer, Computer Education Contact No: +8801718976860, +8801915566977 E-Mail : mostafiz2000@gmail.com

2. 1. OR Gate A B A+B 2. AND Gate A B AB 3. NOT Gate Ā A

3. OR Gate A B A+B 0 0 0 111 101 110 000 BA OutputInput A B Battery Lamp A+B Step 1 0+0=0 OR Gate A B A+B 0 1 1 111 101 110 000 BA OutputInput A B Battery Lamp A+B Step 2 0+1=1 OR Gate A B A+B 1 0 1 111 101 110 000 BA OutputInput A B Battery Lamp A+B Step 3 1+0=1 OR Gate A B A+B 1 1 1 111 101 110 000 BA OutputInput A B Battery Lamp A+B Step 4 1+1=11+1=1 Symbol Truth Table Electric Circuit Compare between gate and electric circuit

4. Step 2 A B Battery Lamp AB AND Gate A B AB 1 0 0 0  1=0 InputOutput ABAB 000 010 100 111 Step 3 A B Battery Lamp AB AND Gate A B AB 0 1 0 1  0=0 InputOutput ABAB 000 010 100 111 Step 4 A B Battery Lamp AB AND Gate A B AB 0 0 0 11=111=1 InputOutput ABAB 000 010 100 111 Step 1 A B Battery Lamp AB AND Gate A B AB 0 0 0 0  0=0 InputOutput ABAB 000 010 100 111 Symbol Truth Table Electric Circuit Compare between gate and electric circuit

5. NOT Gate Ā A Battery Lamp A Ā Step 1 0101 InputOutput AĀ 01 10 Step 2 NOT Gate Ā A Battery Lamp A Ā 1010 InputOutput AĀ 01 10 Compare between gate and electric circuit Symbol Truth Table Electric Circuit