space switch
121Keyboard (computing) — In computing, a keyboard is an input device partially modelled after the typewriter keyboard which uses an arrangement of buttons, or keys which act as electronic switches. A keyboard typically has characters engraved or printed on the keys, and… …
122iOS version history — Contents 1 Overview 2 Versions 2.1 Unreleased versions …
123Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …
124List of Disgaea characters — This article contains information on characters from the video strategy/role playing games Disgaea: Hour of Darkness and Disgaea 2: Cursed Memories for the PlayStation 2 video game console, and Disgaea 3: Absence of Justice for the PlayStation 3… …
125electromagnetism — /i lek troh mag ni tiz euhm/, n. 1. the phenomena associated with electric and magnetic fields and their interactions with each other and with electric charges and currents. 2. Also, electromagnetics. the science that deals with these phenomena.… …
126Door — For other uses, see Door (disambiguation). A door is a movable structure used to open and close off an entrance, typically consisting of a panel that swings on hinges or that slides or rotates inside of a space. When open, they admit ventilation… …
127Enigma machine — Military Enigma machine …
128Pinball — covered case called a pinball machine. The primary objective of the game is to score as many points as possible. Secondary objectives are to maximize the time spent playing (by earning extra balls and keeping the ball in play as long as possible) …
