Strong rectangular frame fixed by screws, an inset hole every25 cm to fix the slotting auger, guard board, bunches of cables and circuit diagram sidekicks, etc.
坚固的用螺丝固定的长方框，每隔25毫米有一个嵌孔，用来固定槽沟、板、缆束及线路图插袋等。
2
Taking into consideration of ESD, the guard ring is adopted to isolate resistors and capacitors, thus to eliminate the influence in the main circuit by them.
出于ESD考虑，在输入输出采用保护电路：采用保护环隔离电阻电容，减小其对核心电路的影响。
3
This paper introduces a method how to do a guard against theft and alarm system of cable, using 555 integrate circuit and MCS - 51 MCU.