Connect to the serial port and make sure that the dial-up connection established by Windows is working. I hope to manually type AT commands in the hyperterminal to make the modem dial up to the Intern
The HT46R71D is Holtek’s new Dual Slope A/D Type 8-Bit OTP MCU. The specifications include 2K OTP ROM program memory, 32 byte Data RAM. It also has a 16-bit Timer and an 8-bit Timer, a buzzer hardware