二、新技术的研制1.运用新技术改造现有的和研制新的信函分拣机美国邮政在光学识字机普遍使用前,对于现有的12个席位的信函分拣机(1975年有562台)和单席位的信函分拣机(1975年有400台)进行了改造。12个席位的分拣机配备了电子分拣信息处理机,原有的机械部件改用电子部件,从而使机器噪音降低,差错率减少,性能 II. Development of new technologies 1. Application of new technologies to retrofit existing and development of new letter sorter Prior to the widespread use of optical-typewriters, the United States Postal Service conducted a search for the existing 12-seat letter sorter (in 1975 there were 562 Taiwan) and single-seat mail sorter (400 in 1975). The 12-seat sorting machine is equipped with an electronic sorting information processor, the original mechanical components to electronic components, so that the machine noise reduction, error rate reduction, performance