Circuits

We're building a computer from scratch. We're going to start by learning about the circuits you can make using transistors.

We'll be using the 2n3904 NPN transistor primarily.

• NOT Gate
• NAND Gate
• 3-input NAND Gate
• NOR Gate
• XOR Gate
• Full Adder
• Clock (A-Stable Multivibrator)
• SR Latch
• D Latch
• D Flip-flop
• Edge Triggered D Flip-flop (Master/Slave)
• Edge Triggered D Flip-flop with 3-input NAND Gates
• Ring Counter (From D Flip-flops)
• 4-Bit Binary Counter (From D Flip-flops)
• 4-Bit Binary Counter (With enable, from JK Flip-flops)
• 8-Bit Binary Adder
• 4-Bit Binary Decoder
• 4-Bit Computer from Transistors