Mark-8 | 1974

mark-8

mark-8

In 1974, the Mark-8 was a microcomputer design based on the Intel 8008 CPU. This CPU was the world’s first 8-bit microprocessor. The Mark-8 was designed by Jonathan Titus, a graduate student studying chemistry at Virginia Tech. After completing the computer, Titus wanted to share the design with the community. He contacted Radio-Electronics and Popular Electronics, but Popular Electronics showed no interest in him. However, Radio-Electronics was different. They published the Mark-8 as a 'loose kit' in the July 1974 issue as a cover story.

The Mark-8 was introduced in the July 1974 issue of Radio-Electronics as a 'build-it-yourself project.' The article included a $5 booklet with a circuit board layout and DIY project instructions. Titus had circuit board sets made by a company in New Jersey for $50 and shipped them to hobbyists who wanted to build it. Those wishing to build the Mark-8 had to source various electronic components from multiple suppliers. In the end, several thousand booklets and about 100 circuit board kits were sold.

The Mark-8 was introduced in Radio-Electronics as "Your Personal Minicomputer." At that time, referring to a computer based on a microprocessor as a 'microcomputer' was not common. The editors of the publication categorized the Mark-8 alongside other 'mini-sized' computers of the time. According to an official statement from Intel, "The Mark-8 is known as one of the first personal computers."

While the Mark-8 did not achieve great commercial success, it led the editors of Popular Electronics to consider publishing a similar but more accessible microcomputer project. Just six months later, in January 1975, they realized this plan by releasing the Altair 8800.

According to a 1998 article from Virginia Tech, Titus's Mark-8 microcomputer is now displayed in the Smithsonian Museum’s "Information Age" exhibit.

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