The very first electronic gates were created using relays. The technologies used to implement those gates, however, have changed dramatically over the years. If you look back at the history of computer technology, you find that all computers are designed around Boolean gates. Let's talk a little bit about the technology and the process so you can actually try it out! If you would like to experiment with these gates so you can try things out yourself, the easiest way to do it is to purchase something called TTL chips and quickly wire circuits together on a device called a solderless breadboard. We also saw how to combine these gates together into higher-level functions, such as full adders. These gates are the building blocks of all digital devices. In the article How Boolean Logic Works, we looked at seven fundamental gates.
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