A NOR gate is a logic gate where the output goes HIGH (or “1”) only if all its inputs are LOW (or “0”). The schematic symbol for a NOR gate is like the OR gate, just with a circle at the output to indicate that it’s an inverted version of OR. “NOR” stands for NOT-OR
An OR gate is a logic gate where the output goes HIGH (or “1”) if any of its inputs are HIGH. So if A OR B is HIGH, the output Q also becomes HIGH. If A or B is true, then Q is true Truth Table OR gates can have more than two inputs. But
A NAND gate is a logic gate where the output goes LOW (or “0”) only if all its inputs are HIGH (or “1”). The schematic symbol for a NAND gate is like the AND gate, just with a circle at the output to indicate that it’s an inverted version of AND. “NAND” stands for NOT-AND
An AND gate is a logic gate where the output goes HIGH (or “1”) only if all its inputs are HIGH. So if the inputs A AND B are HIGH, the output Q will also be HIGH. If A and B are true, then Q is true Truth Table AND gates can have more than
The XOR gate is a logic gate where the output goes HIGH (or “1”) if one – and only one – of its inputs are HIGH. XOR stands for Exclusive-OR. Check out its symbol and truth table below. If A and B are different from each other, then Q is true Truth Table XOR gates
An XNOR gate is a logic gate where the output goes HIGH (or “1”) only if both its inputs are equal. So if the inputs A and B are both HIGH or both LOW, the output Q will be HIGH. If A and B are the same, then Q is true Truth Table XNOR gates
Logic gates are the basic building blocks of digital electronics. These are the components that we use for “doing stuff” with the 1s and 0s. You can combine them to create other building blocks like latches, flip-flops, adders, shift registers, and more. The basic logic gates are AND, NAND, OR, NOR, XOR, XNOR, and NOT.
Ohms law is a simple formula that makes it easy to calculate voltage, current, and resistance. You can use it to find what resistor value you need for an LED, how much power your circuit uses, and much more. It’s one of the few formulas in electronics that you’ll use on a regular basis.
If you are into baseball and would like a challenging ‘real-playing action’ baseball game, typically to exhibit your pitching skills, then you might like to construct this one. It is designed around four easily available and inexpensive digital ICs in the 4000 CMOS series along with some passive components.
In this tutorial, you’ll learn how to build a 555 PWM Circuit. You’ll modify the standard astable circuit with a couple of diodes. And you’ll see how you can use this to control the speed of a motor.
In this tutorial, you’ll learn how to build a 555 police siren circuit using two 555 timer ICs.
The 555 timer is a popular integrated circuit (IC) for hobbyists and can be used for a great variety of projects. For this project, we are going to use it to create sound with a twist!
Instead of a “straight” sound, we are going to make the frequency change automatically so it ends up sounding like a wailing police siren.
In this guide, I’ll show you how to build a DIY sugar dispenser using parts made of cardboard.
By making the parts out of cardboard, it’s quick and easy to build and experiment with different ways to have your machine dispense sugar.
When you’ve built a cardboard-based sugar dispenser that you’re happy with, you can consider upgrading it by building the mechanics using other more durable materials (ex laser cutting plastic).
But for now, let’s build our cardboard prototype!
In this guide, I’ll show you how to build a dual +5V -5V power supply from a standard USB outlet.
Dual power supplies with a negative output taken from the positive output can be a little tricky. It’s not a matter of difficulty, but about the low availability of support for easier ways to do this kind of power supply.
So I’ll show you one of the easiest ways to make a dual power supply (also known as bipolar power supply) using a simple USB connection.
It is fair to mention, that this will be for low-power projects since the IC used for this is not capable of outputting much power.
In this tutorial, you’ll learn how to use an ultrasonic sensor. Specifically, you’ll learn how to use the HC-SR04 module with an Arduino to measure the depth of a water tank.
An ultrasonic sensor is one of those things that some people don’t like getting into just because it sounds complex to use and understand. But the fact is, it’s one of the most accessible and fun accessories for those who like to dabble in microcontrollers.
In this episode, we talk about operational amplifiers (opamps) and the 4000 series IC that Øyvind has been writing a series of posts on. We also accidentally came across a funny error on Arrow’s website 😅.