由南京东机务段研制的全路第一台ND_5机车电路图电化教学教具——《ND_5机车电路自动显示系统》,于1990年10月26日经专家组评议在南京通过技术鉴定。该系统将ND_5机车原出厂的23张电路图浓缩汇总成一张图,采用微机控制、发光二极管显示等技术制成。它具有以下主要功能: 1.能按教程要求的程序显示机车电路,并能以步进保持显示方式显示电流方向; The first ND_5 locomotive circuit diagram developed by Nanjing East Railway Station Electrochemical teaching aids - “ND_5 locomotive circuit automatic display system”, on October 26, 1990 by the expert group appraised in Nanjing through technical appraisal. The system will ND_5 original locomotive circuit diagram of the 23 concentrated into a map, the use of computer control, light-emitting diode display and other technology made. It has the following main functions: 1. According to the procedures required to display the locomotive circuit, and can be displayed in step-by-step display of current direction;