ODWS icon The Open Door Web Site
Site Map
> Electronics
History of Science and Technology
Math Studies
Learning French
Study Guide

Digital Electronics

Custom Search


Digital circuits are constructed from electronic switches. The switches are either ON or OFF; there are no half-way states so the only voltages present in a digital circuit are the supply voltage Vs (usually +5v) and zero. If a point in a digital circuit is said to be "high" we mean that it is at a voltage very nearly equal to Vs. If the point is said to be "low", it means its voltage is very nearly zero. A high state is represented by "1" and a low state by "0".

Experiments with LOGIC GATES

Logic gates are special switches. One logic gate by itself is not much use. When many gates are connected together, they become very useful; a computer, for example, is basically made from thousands of gates (and other types of special switches).

All the gates in the kit (except the inverters) are two-input gates. The voltage which appears at the output depends on the voltages applied to the two inputs. A truth table is a table which shows how the output is related to the inputs.

Part I: Operational Amplifiers

Top of the Page

Privacy Policy

Sponsored Links

Sponsored Pages

Donating to the ODWS

Advertising on the ODWS


Electronics Homepage

The Open Door Team
Any questions or problems regarding this site should be addressed to the webmaster

David Hoult 2017