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The Homebrew Computer Club was an informal group of electronic enthusiasts and technically minded hobbyists who gathered to trade parts, circuits, and information pertaining to DIY construction of personal computing devices. [3] [self-published source] It was started by Gordon French and Fred Moore who met at the Community Computer Center in ...
The first duplexers were invented for use on the electric telegraph and were known as duplex rather than duplexer. They were an early form of the hybrid coil. The telegraph companies were keen to have such a device since the ability to have simultaneous traffic in both directions had the potential to save the cost of thousands of miles of ...
Homebrew, when applied to video games, refers to software produced by hobbyists for proprietary video game consoles which are not intended to be user-programmable. The official documentation is often only available to licensed developers, and these systems may use storage formats that make distribution difficult, such as ROM cartridges or encrypted CD-ROMs.
Exchange operator Nasdaq is on track to beat the New York Stock Exchange on listings for the sixth straight year in 2024, as Wall Street looks for a bumper crop of initial public offerings in 2025.
The cavities serve as resonators (tank circuits) to determine the frequency of the oscillators. A microwave cavity or radio frequency cavity (RF cavity) is a special type of resonator, consisting of a closed (or largely closed) metal structure that confines electromagnetic fields in the microwave or RF region of the spectrum.
A duplexer is to provide duplex (two way) communication over a single path. A diplexer is to allow two signals to be carried over a single path - i.e. to provide two-channel multiplexing . Generally a diplexer consists of a pair of filters with non-overlapping pass-bands, so it implements frequency-division multiplexing .
In casting, a pattern is a replica of the object to be cast, used to form the sand mould cavity into which molten metal is poured during the casting process. Once the pattern has been used to form the sand mould cavity, the pattern is then removed, molten metal is then poured into the sand mould cavity to produce the casting.