Technology History: Before Computers: Notched Card Databases via hack a day Posted by Douglas E. Welch on June 19, 2019 03 TBP Tech computers data processing database feedly history IFTTT manual punch cards tech technology +
Project: Use a Raspberry Pi to Power an LED-Based Record Finding System from Hack A Day Posted by Douglas E. Welch on October 31, 2016 advanced collection database electronics information systems infosys led library neopixel project raspberry pi raspi tech technology wayfinding +