Introduction: Logic Gates Using Transistors and Diodes
Hi, welcome to a purely circuits-based Instructable by Scientify Inc.!
Our aim today:
- To build various logic gates and study their working and truth table.
- To interlink various logic gates in combinational circuits.
A little introduction to logic gates...
Logic gates are the building blocks of every electronic circuit. One can be idealized or physical, and implements a Boolean function: it performs logical operations on one or more binary inputs and produces a single binary output. Binary input: 0 or 1, high or low They are primarily implemented using transistors or diodes acting as electronic switches.
- Jumper Wires
- Transistors - BC547
- Resistors (100, 1k ohm)
- 9V battery
It's good to have extras of some of these components like LED's as you may end up fusing them.
Step 1: Circuit Diagrams
To interconnect logic gates, take the output of one gate to the input of the other gate.
Step 2: Result
Pictures of our 2 setups are attached:
- 2 AND gates interfaced with an OR gate
- 1 NAND gate
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