From: Ben Greenfield via vcf-midatlantic Sent: Sunday, March 13, 2016 5:32 AM To: vcf-midatlantic Cc: Ben Greenfield Subject: [vcf-midatlantic] examples of non-crystal based clocks in digital computing? Ben, The UNIVAC 1219B, which VCF has in its collection used a pulse circulating around a delay line to generate the master clock phases. The real time clock interrupts came from a 1024 hertz Tuning Fork Oscillator. No crystals. Duane