MODULAR SYSTEM OF OPERATING ELEMENTS FOR ELECTRONIC EQUIPMENT AND INSTALLATIONS.

In connection with the development of central units for Unidata 7. 000 computers, Siemens have designed a modular system of operating elements which is equally suitable for communications and automatic feedback control systems. Besides conventional contacts and displays it also embodies the power amplifiers, protective diodes, dropping resistors and filter elements required for the electronics. The use of standard dimensions and connections greatly simplifies the arrangement of the buttons, switches, light signals, etc. Such panels can be automatically wired and tested. Their design features are described.