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UNIX V4 tape successfully recovered: First ever version of UNIX written in C is running again

Crucial early evolutionary step found, imaged, and ... amazingly ... works Computer History Museum software curator Al Kossow ...
EDN

Real Time Operating System/for Autonomous Robot

Developed a Real Time Operating System in C for use in an autonomous robot to emulate simultaneous execution of tasks. Concepts of task scheduling, context switching, semaphores, wake, yield, sleep & ...