1 Terabyte: Automated tape robot; all the X-ray films in a large technological hospital; 50,000 trees made into paper and printed; daily rate of EOS (Earth Orbiting System) data (1998

• 一个自动化卡带装置所需的空间大小；一所大型技术医院的所有X光片；用五万株树做成的纸张的打印品；环地轨道系统的日运行量（1998年）