The Mark-8 is a microcomputer design from 1974, based on the Intel 8008 CPU (which was the world's first 8-bit microprocessor). The Mark-8 was designed by graduate student Jonathan Titus and announced as a 'loose kit' in the July 1974 issue of Radio-Electronics magazine.
The Mark-8 was introduced as a 'build it yourself' project in Radio-Electronics's July 1974 cover article, offering a US$5 booklet containing circuit board layouts and DIY construction project descriptions, with Titus himself arranging for $50 circuit board sets to be made by a New Jersey company for delivery to hobbyists. Prospective Mark-8 builders had to gather the various electronics parts themselves from a number of different sources. A couple of thousand booklets and some hundred circuit board sets were eventually sold.
The Mark-8 was introduced in R-E as "Your Personal Minicomputer". This may be readily understood considering that the microcomputer revolution had yet to happen; the word 'microcomputer' was still far from being common fare. Thus, in their announcement of their computer kit, the editors quite naturally placed the Mark-8 in the same category as the era's other 'minisize' computers.
Although not very commercially successful, the Mark-8 prompted the editors of Popular Electronics magazine to consider publishing a similar but more easily accessible microcomputer project, and just six months later, in January 1975, they went through with their plans announcing the Altair 8800.
- The Mark-8 Minicomputer – a web page by Andrew Davie with Jonathan Titus' own description of the Mark-8 project (dead link)
- Mark-8 Minicomputer – an original Mark-8, restored to working condition
- A Mark-8 Experience – Terry Ritter's detailed memoir of building and running a Mark-8 in 1974.
- Der Mark 8 Minicomputer – written by Andreas Reichel, he built his own mark 8 in the year 2005
- Collection of old analog and digital computers at www.oldcomputermuseum.com
- Jonathan A. Titus, Microcomputer Pioneer
- Roys Justus makes a copy of Mark-8 as it is in the Smithsonian
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