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).
Data Manipulation Language (DML) allows a user to insert or update records and extract information from records for viewing.
<h3>What is a
relational database?</h3>
A relational database is a type of database designed and developed to store, structure and recognize relation which exist between data points and items of information.
In database management system (DBMS), a type of relational methods which allows an end user to insert or update records and extract information from records for viewing is known as Data Manipulation Language (DML).
Read more on database here: brainly.com/question/13179611
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Google slides is and online presentation tool
Answer:
The answer is "Videoconferencing"
Explanation:
Video conferencing is a process, that uses communicating devices to convey sound and video information. It is used to involves the performances and meeting more than two members at various sites.
- It enables the users to meet a person face to face by different locations, and avoid moving to a single site.
- This type of communication is used everywhere in the world, it saves the time of highly salaried employees, and provides the usage of different sites in the same organization.
