This document provides brief summaries of several major technology companies and inventions: - Microsoft was founded in 1975 by Bill Gates and Paul Allen as a software and hardware company. - Alphabet is the parent company of Google and focuses on internet products, software, electronics and other technologies. Its main product is the Google search engine. - Television is a system for transmitting and receiving moving images and sound over a distance using a broadcasting mechanism. - Facebook is a social media website created by Mark Zuckerberg along with Eduardo Saverin, Chris Hughes and Dustin Moskovitz. - Instagram is a photo and video sharing app with a distinctive square format that honors the Kodak Instamatic camera.