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keypad phone
A telephone keypad is a keypad installed on a push-button telephone or similar telecommunication device for dialing a telephone number. It was standardized when the dual-tone multi-frequency signaling (DTMF) system was developed in the Bell System in the United States in the 1960s that replaced rotary dialing originally developed in electromechanical switching systems. Because of the installed abundance of rotary dial equipment well into the 1990s, many telephone keypads were also designed to produce loop-disconnect pulses electronically, and some could be optionally switched to produce either DTMF or pulses.
The development of the modern telephone keypad is attributed to research in the 1950s by Richard Deininger under the directorship of John Karlin at the Human Factors Engineering Department of Bell Labs. The contemporary keypad is laid out in a rectangular array of twelve push buttons arranged as four rows and three columns of keys. For military applications, a fourth, right-most column of keys was added for priority signaling in the Autovon system in the 1960s. Initially, between 1963 and 1968, the keypads for civilian subscriber service omitting the lower left and lower right keys that commonly are assigned to the star (✻) and number sign (#) signals, respectively. These keys were added to provide signals for anticipated data entry purposes in business applications, but found use in Custom Calling Services (CLASS) features installed in electronic switching systems.
hi hingi po sana ako help para maayos itong binigay sakin ng tita ko SOS signal kase siya
hingi po sana ako tools at tut paano ma open sim unlock niya salamat po
mga paps patulong naman gusto ko alisin yung phone lock ng samsung sm-b350e ko.
nagdownload na ako ng flash tool odin at flash file tapos usb drivers pati updated sinubukan kuna pero nakalagay lagi pag sinasalpak ko ang cp usb not recognize
bakit ganun mga paps irereflash ko kasi yung keypad phone ko ang nangyare kasi my phone password locked nag activate nlng bigla kahit walang nagseset. hindi ko alam kung bakit kaya may nagsabi sakin reflash nlng daw
sm-b350e yan ang model
kaso pag sinasalpak ko sya sa pc ko
device not...
mga kuys bakit kaya pag nagdownload ako ng mga Mp3 sa mp3juice tas nilagay ko sa Flash Drive at sa mga keypad na phone, di nagana mga nilagay ko iilan lang nagana, pero pag sa laptop at sa mga original na touchscreen ok naman mga mp3?
maraming salamat sa mga sasagot:)
Bumigay na yung samsung galaxy y S5360 ko (ito yung popular na phone na madaling i-root)ĺumobo na baterya at kusang nag-ooff
Hinahanap ko sana sa bar phone/keypad phone ay may
Ordinary sim slot
Radio
Flash
USB charger
at TV sana
May alam ba kayo or ginagamit na ganitong phone?
Tumatagal ba...