Restoring a GRiD Compass and Building the World’s First GPIB Speech Synthesizer

I restored a GRiD Compass computer and created a GPIB-based speech synthesizer for it. The GRiD is unique due to its use of Magnetic Bubble Memory, and the Speech Synthesizer uses the vintage SP0256A-AL2, Votrax SC-01A, and SSI-263 ICs.