AIA/NAS NAS 943-1974 (Rev. 4)1974年8月取代数字控制设备直切及配置格式可变块互换穿孔带标准 [代替: AIA/NAS NAS 955]
Interchangeable Perforated Tape Standards Variable Block Format for Positioning and Straight Cut Numerically Controlled Equipment Superseded - August 1974 (Rev. 4) [Use: AIA/NAS NAS 955]
The information and comments contained in this foreword should not be considered part of the standard. They have
been included ior clwificatioii and guidance.
With the advent of Nuinerical Control and the continually increasing use of Numerically Controlied Machine Tools,
many people. including control systems builders, Machine Tool builders and users, have realized the importance
of a standardized input medium. This is particularly true for the large majority of Numerically Controlled hfachine
Tools using perforated tape input.