A Microprocessor-Based Digital Filter Programed in a Block Diagram Language

A programmable digital filter with arbitrary characteristics and configurations for on-line, real-time applications is easily implemented by using a micro-processor. The program language used here is directly based on a block diagram representing the digital dilter which is familiar to many control engineers. The hardware and software used for the implementation of system are described. Practical examples of the filter implementation are presented to illustrate how the block-diagram language programming can easily be done without any need to learn assembly language and the program steps to be required can extremely be reduced. Frequency and time responses of digital filters obtained thus are also presented on a cathod ray tube through TTY.