Customized Keypad Design: With 16 keys, this DTMF keypad microphone offers a user-friendly interface for easy operation, allowing users to quickly access various functions. Wired Communication: This microphone features a wired connection, ensuring stable and secure communication with the two-way radio....
应该是个电话拨号芯片吧--双音多频拨号键盘 开关可以用触发器。用沿来触发翻转。比如cd4013之类
DTMF keypad interface.Describes a keypad interface for dual-tone multiple frequency (DTMF) generator integrated circuit. Problems in connecting telephone-style keypad to a DTMF; Crosspoint keypad design.ParkerBobEBSCO_AspElectronics Australia
DTMF - Sound of Dialing Keypad 你可能也会喜欢 DX Spots 参考资料 Amateur Radio Toolkit 教育 Morse Decoded 教育 GC Wizard 参考资料 RepeaterBook 参考资料 VHDL Compiler 教育 Morse Code Translator App 教育 HamExam 教育 QRQ CW 教育 Hand BASIC - CBM Flavor 教育 ...
(2005). Speech versus touch: A compara- tive study of the use of speech and DTMF keypad for navigation. International Journal of Human-Computer Interaction, 19, 343-360. doi:10.1207/s15327590ijhc1903_4K. M. Lee and J. Lai, "Speech Versus Touch: A Comparative Study of the Use of ...
Taidacent Pulse Dial to Dual Tone Multi Frequency Caller ID Converter Decoder DTMF Signal Generator DTMF Keypad Tone Generator, You can get more details about Taidacent Pulse Dial to Dual Tone Multi Frequency Caller ID Converter Decoder DTMF Signal Gener
Learn how to gather user input during a Twilio Voice phone call through the phone's keypad (using DTMF tones) in your Java application.
Learn how to gather user input during a Twilio Voice phone call through the phone's keypad (using DTMF tones) in your PHP application.
4.9|1,000+ sold) 5.0 1 Review by JaneLin Radio Store( 4.9|1,000+ sold) Product sellpoints Versatile PTT Functionality:Features a PTT key and emergency key for quick and reliable communication in critical situations. Ergonomic Design:At 230 g and with a compact 97*64.0*39.4 mm size, the...
Kenwood>Microphones mobile Standard Low Profile Microphone with 16-key DTMF (8-pin mod. plug) For KENWOOD TM-271, TK-762, TK-862, TK-7160, TK-8160, TK-7162, TK-8162, TK-7180, TK-8180, TK-7189, TK-8189, TKR-750, TKR-850, TK-768G, TK-868G, TK-760, TK-860, TK-780, TK...