No, someone doesn't have to be there at the same time as you for you to send them a message.
synchronous
Yes. It is operating in synchronous with the clock. Two wire communication. SDA, SCL and GND pins.
voicemail
voicemail
Yes is type of communication
voicemail
Asynchronous vs. Synchronous Communication
Synchronous just means "at the same time," so the difference is basically between immediate forms of communication. Here are some examples:Asynchronous communication:EmailMessage BoardsLettersBlogsVideo or Music recordingsOnline discussion boardsSynchronous communication:Phone callsAudio and Video conferencesIn person concertsInstant messaging / chatIn-person conversations / meetingsClearly the synchronous method is much faster, but the method that is best for a specific communication depends on the circumstances.
Synchronous communication ensures data integrity and order but can lead to potential bottlenecks as both the sender and receiver must be available simultaneously. Asynchronous communication allows for greater flexibility and scalability but can be complex to implement due to potential data integrity and order issues. At the system level, synchronous communication is more deterministic and easier to manage, while asynchronous communication offers better performance and fault tolerance. At the programmer level, synchronous communication is simpler to implement and debug, while asynchronous communication requires more careful design and handling of potential race conditions.
Twitter is often described as "mini blogging".
when each step in the service depends on the previous steps when you require real-time communication
twitter is a business tool which is used for many different types of communication. some of the uses of twitter in business communication are