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Mechanoids - Dual Tone Multi-Frequency (DTMF)...
phone-dtmf-touchtone-
About This Category
Facets of mechanical devices and automation; machines of all sorts (though mainly man-made) including robots and computers.You might like to visit 2001: A Space Odyssey (A Shrine), which includes tiny excerpts of HAL's famous utterances...
- phone = phones, telephone
- phone dtmf = Dual Tone Multi-Frequency (DTMF), TouchTone(TM), Touch-Tone(TM) = In-band successor/alternative to pulse (loop-disconnect, LD) dialing from handset to local exchange for wire-line telephones.
phone DTMF touchtone dialer acoustic coupler and keypad from Tokai closeup 1 DHD.jpg ... phone DTMF touchtone dialer acoustic coupler and keypad from Tokai closeup 4 DHD.jpg
| Thumbnail | Exhibit Name |
|---|---|
 | phone DTMF touchtone dialer acoustic coupler and keypad from Tokai closeup 1 DHD.jpg (Mechanoids) |
 | phone DTMF touchtone dialer acoustic coupler and keypad from Tokai closeup 2 DHD.jpg (Mechanoids) " |
 | phone DTMF touchtone dialer acoustic coupler and keypad from Tokai closeup 3 DHD.jpg (Mechanoids) " |
 | phone DTMF touchtone dialer acoustic coupler and keypad from Tokai closeup 4 DHD.jpg (Mechanoids) " |