Usenet (/ ˈ j uː z n ɛ t /) is a worldwide distributed discussion system available on computers.It was developed from the general-purpose Unix-to-Unix Copy (UUCP) dial-up network architecture. Tom Truscott and Jim Ellis conceived the idea in 1979, and it was established in 1980. Users read and post messages (called articles or posts, and collectively termed news) to one or more …

Das Usenet (/ ˈjuːznɛt /, urspr. Unix User Network – englisch für ‚Unix-Benutzer-Netzwerk‘) ist ein weltweites, elektronisches Netzwerk, das einen eigenen selbstständigen Dienst des Internets neben dem World Wide Web darstellt. Es entstand 1979, lange vor dem World Wide Web. Es stellt fachliche Diskussionsforen aller Art in reiner Textform zur Verfügung, die Newsgroups, an …

Tone burst is an obsolete method of selective calling where the radio transmits a single 0.5- to 1.5-second audio tone at the beginning of each transmission. This scheme existed before circuitry for CTCSS had been developed. This method was in wide use in the United States from the 1950s through the 1980s. Human spaceflight operations made frequent use of this method.

De Apple II-familie was de eerste reeks microcomputers van Apple, van eind jaren zeventig tot begin/midden jaren tachtig.De toestellen verschilden volledig van Apples latere Apple Macintoshcomputers en hadden hoofdzakelijk een 8 bit-architectuur.. De voorganger was de Apple I, een handmatig geassembleerde machine die werd ontworpen door Steve Wozniak en …