manually-operated telephone system
71Two-factor authentication — (TFA, T FA or 2FA) is an approach to authentication which requires the presentation of two different kinds of evidence that someone is who they say they are. It is a part of the broader family of multi factor authentication, which is a defense in …
72Chorded keyboard — A Microwriter MW4 (circa 1980) A keyset or chorded keyboard (also called a chorded keyset, chord keyboard or chording keyboard) is a computer input device that allows the user to enter characters or commands formed by pressing several keys… …
73Hayes command set — The Hayes command set is a specific command language originally developed for the Hayes Smartmodem 300 baud modem in 1981. The command set consists of a series of short text strings which combine together to produce complete commands for… …
74Northeast Blackout of 2003 — The Northeast Blackout of 2003 was a massive widespread power outage that occurred throughout parts of the Northeastern and Midwestern United States, and Ontario, Canada on Thursday, August 14, 2003, at approximately 4:15 pm EDT (20:15 UTC), with …
75telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …
76Berlin U-Bahn — Infobox Public transit name = Berlin U Bahn imagesize = 80px locale = Berlin transit type = Rapid transit began operation = 1902 ended operation = system length = km to mi|151.7|abbr=yes|precision=1 lines = 9 vehicles = stations = 170 ridership …
77Dallas Love Field — This article is about the airport in Dallas, Texas. For the airport in Prescott, Arizona, see Ernest A. Love Field. For the neighborhood around Love Field, see Love Field, Dallas, Texas (Neighborhood). Dallas Love Field USGS aerial photo as of… …
78Hayes Microcomputer Products — was a U.S. based manufacturer of modems. They are particularly well known for their Smartmodem, which introduced the ability to control the modem through commands sent in the data stream itself. The smart modem approach dramatically simplified… …
79Louisiana State Penitentiary — For similarly named locales, see Angola (disambiguation). Angola   Unincorporated community   Louisiana State Penitentiary …
80Electronic voting — Election technology Certification of voting machines Independent Testing Authority (ITA) NVLAP VVSG End to end auditable voting systems Help America Vote Act Independent verific …
