On This Day in Tech History

Stories Published September 25 Throughout History

Historic Tech Events

Mars Observer Mission

Mars Observer Mission
1992

The Mars Observer was launched by NASA on September 25, 1992, with the goal of studying the geology, climate, and other characteristics of the planet Mars. The spacecraft was equipped with a suite of scientific instruments, including cameras, spectrometers, and other sensors, that were designed to collect data on Mars from orbit. However, the mission was ultimately unsuccessful, as the spacecraft lost communication with Earth just as it was entering orbit around Mars on August 21, 1993. Despite attempts to reestablish contact with the probe, it was never heard from again.

The Underwater Telephone Revolution

The Underwater Telephone Revolution
1956

In 1956, On September 25th, the world's first underwater telephone cable was inaugurated, connecting Scotland and Northern Ireland. The copper wire insulated with polyethene and steel armour was laid across the Irish Sea, revolutionizing communication between the two countries. The cable replaced the unreliable radio wave method and paved the way for further developments in underwater communication technologies, enabling efficient communication worldwide.

Motorola Incorporation

Motorola Incorporation
1928

Motorola was incorporated on September 25, 1928, by the Galvin brothers, Paul and Joseph, in Chicago, Illinois. The company started off as the Galvin Manufacturing Corporation and initially produced battery eliminators, which were devices that allowed battery-powered radios to be run on household electricity. Later on, the company shifted its focus to the development of two-way radios and other communication technologies and eventually became one of the world's leading telecommunications companies.

MCM/70 Microcomputer Introduction

MCM/70 Microcomputer Introduction
1973

In 1973, Micro Computer Machines of Canada unveiled the MCM/70 microcomputer on 25th September, one of the earliest commercially manufactured devices that can be considered a personal computer. It had 4KB of memory, a built-in keyboard, and a monochrome monitor, and was marketed to engineers and scientists for data analysis. Despite its high cost and limited capabilities, it found customers in companies like Chevron, Mutual Life Insurance, NASA, and the US Army.

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