Answer: Please see below as the answer is self-explanatory
Explanation:
Digital phones, normally uses a keyboard, with the digits 0-9, and special characters like # and *.
When the caller presses any keyboard, an electronic circuit within the phone generates two pure sinusoids, of frequencies within the vocal bandwidth (between 300 Hz and 3 khz, roughly), which identifies uniquely (as decoded by the receiving switch) which was the key pressed.
In this way, the switch reconstructs the phone number called, separating country code, area code and the local number as it receives the tones.
This system is called DTMF (dual tone multi frequency).
Answer:
B
data correlation
Explanation:
if you wear the bracelet the insurance rate will go down
Answer:
You can stop, pause, start, delay start, or resume each service as appropriate. You can also modify the start mechanism (Manual or Automatic) or specify an account. Windows Services broadly fall into three categories depending on the actions and applications they control: Local Services, Network Services and System.
Explanation:
A computer keyboard is an input device that allows a person to enter letters, numbers, and other symbols (these are called characters in a keyboard) into a computer. It is one of the most used input devices for computers. Using a keyboard to enter lots of data is called typing
The answer is d. Hope that helps.