ECG Tester Based on MSP430

This system design a function signal generator, with MSP430 as control core, based on DDS chip AD9850, first of all produced 100 Hz ~ 200 KHZ to 1 MHZ (extensible) adjustable frequency of the sine wave signal, and then through waveform transform circuit, produce square wave and triangular wave signal; Through the use of voltage amplification, can be in 1 k O load resistance on the 100 hz ~ 200 KHZ sinusoidal signal in the range of the output voltage amplitude values of peak to peak VP - P is adjustable within 0 ~ 5 v. Control system adopts LCD display and voice prompt, convenient.