The microprocessor-based controller/measure/actuator is designed to provide a necessary hardware to control a wide variety of different systems that require either analog or digital control. The hardware is controlled by a 6809 microprocessor and has 8K bytes RAM, together with a removable 8K bytes EPROM. Besides that, it also has a serial interface capability to allow codes to be downloaded directly from a PC. Other features include 8-bit digital I/0, 10-bit A/D and D/A, +10V analog I/0, frequency input, a variable duty cycle square wave and square wave outputs, as well as a solid state relay (SSR) output. The hardware also has a sample and hold capability. 
 

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