OSI Replica Computer

Posted by musovern on Jun 25th, 2021 in Ohio Scientific | 0 comments Getting a OSI Challenger system together Test setup   Have finished the keyboard   OSI 505 board OSI 560Z OSI 502 OSI 540b CP4 setup working Floppy Disk and Gotek working Read More...

The Altair 8800c Clone:

Posted by musovern on Jun 25th, 2021 in Altair 8800c, S100 | 0 comments The Altair 8800c clone faithfully recreates the iconic computer that ignited the personal computing revolution in 1975. Revered as the first commercially successful microcomputer, the original Altair 8800 captured the imaginations of hobbyists, engineers, and future tech giants. This modern clone pays homage to the pioneering design, replicating the distinctive front panel with its rows of switches and LEDs, while incorporating modern enhancements for reliability and usability. Whether you’re a vintage computing enthusiast or someone seeking to relive the early days of the microcomputer era, the... Read More...

2650 Mini Computer

Posted by musovern on Feb 15th, 2020 in 2650-mini-computer, Vintage Computers | 0 comments A remake of the EA 2650 mini system In May 1978, Electronics Australia described a small development board based on the Signetics 2650 microprocessor. For many people in Australia (the author included), this was the first computer that was cheap enough to buy and build even if you were a student or beginner. This update to the simple and elegant design of the original provides a new PCB that evokes the original while adding modern alternatives to some of the hard-to-get parts of the original. The original article text is included at the end of this document The new board has three options over the... Read More...