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Calculator
George Stiblitz developed the first calculator (Model K). This led to the development of computers as an integral part.
http://history-computer.com/ModernComputer/Relays/Stibitz.html -
Altair 8800
Ed Roberts created a microcomputer called the Altair 8800. It was a very successful product at the time, thousands were sold within the first month. However, it only holds 256 bytes of memory and also has no keyboard or monitor.
http://history-computer.com/ModernComputer/Personal/Altair.html -
Apple I
Steve Jobs, Steve Wozniak, and Ron Wayne developed the Apple I which was launched as the original Apple Computer. It was mainly built so games could be programmed and played on it. The Apple I sold for $666 at the time ($2,851.31 in 2017). http://applemuseum.bott.org/sections/computers/a1.html -
Apple II
The Apple II improved on the Apple I. It distinguished itself from its predecessor using color and sound. The operating system was stored in ROM for more memory and had an optional floppy disk. https://archive.org/stream/byte-magazine-1977-05/1977_05_BYTE_02-05_Interfacing#page/n35/mode/2up -
TRS-80
Tandy Corporation and Radio Shack developed the TRS-80.
It had 16KB of memory, the powerful Level II BASIC programming language, and a floppy-disk drive that could store up to 49KB of data.
http://techland.time.com/2012/08/03/trs-80/ -
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Internet
The Internet evolved over time starting in the 1980's. The Internet started in the United States as a government weapon in the Cold War.
http://www.history.com/topics/inventions/invention-of-the-internet -
IBM PC
The IBM PC was introduced at a press conference where Estridge announced the IBM Personal Computer that had a price tag of $1,565 which included a system unit, a keyboard and a color/graphics capability. Options included a display, a printer, two diskette drives, extra memory, communications, game adapter and application packages(including one for text processing).
https://www-03.ibm.com/ibm/history/exhibits/pc25/pc25_birth.html -
Lotus 1-2-3
Lotus 1-2-3 was a spreadsheet program designed for IBM personal computers developed by Lotus Corporation. The program combined graphics, spreadsheet functions, and data management, influencing the development and use of spreadsheets.
http://mentalfloss.com/article/48627/lotus-1-2-3-three-decades -
Internet Explorer
Microsoft created a series of graphical web browsers. It was initally a Microsoft Windows operating system. http://www.statetechmagazine.com/article/2013/08/visual-history-internet-explorer -
