Archive for 2025
First Transcontinental Phone Call
July 29, 1914
The first test call is made on the newly completed transcontinental telephone line, taking place between New York and San Francisco. The last pole was erected and the line completed two days earlier on July 27th, but commercial service did not start until January 25th of the next year. The sixth month delay was due to AT&T’s wish to publicize the service in conjunction with San Francisco’s 1915 World Fair.
IBM’s First Desktop Computer
July 28, 1981
IBM introduces their System/23 Datamaster desktop computer, only two weeks before they introduce their IBM PC. Geared towards small business for use as a word processor and data processor, the computer was designed to be set up by end-users without the need of a computer specialist. While now a footnote in history, the importance of the Datamaster is that many of the team members that developed it were re-assigned to the secret IBM PC project. Much of the knowledge they acquired working on the Datamaster went into developing the IBM PC as quickly as possible. For example, the choice of the Intel 8088 processor in the IBM PC was based on the team’s familiarity with the similar Intel 8085 processor used in the Datamaster.