Cisco CloudCenter: Get the Hybrid IT Advantage

Asynchronous Communication

Definition - What does Asynchronous Communication mean?

Asynchronous communication is a transmission technique commonly used by personal computers (PCs) to connect to modems, printers, fax machines, modems, etc. With asynchronous communication, a series of bytes or ASCII characters can be sent via a single wire.

The data is transmitted as a series of bits. A shift register found either in the hardware or in the software can be used to serialize every data byte into a series of bits. These bits are then delivered via the wire with the help of a bus driver and an input/output (I/O) port to establish a connection with the cable.

Techopedia explains Asynchronous Communication

The asynchronous communication method is generally employed to illustrate communications wherein data could be sent intermittently instead of sending it in a steady stream. Asynchronous communication is supported by nearly all types of computers. The most important benefit of asynchronous communication is that the receiver clock and the transmitter are independent and not synchronized.

Asynchronous communications include the following:

  • Communications between the devices inside a computer, for example, between the central processing unit (CPU) and the disk drives.

  • Communications between the computer and external devices, for example, between the computer and a printer, between the computer and a modem, and so on.

Asynchronous communications require that the receiver have the ability to differentiate between noise (random signals) and valid data. In communications triggered by computers, this is typically achieved by using special bits at the start and end of every message.

Characteristics of asynchronous communication:

  • Uses a simple interface
  • Used to connect printers, modems, terminals, home connections to the Web
  • No clock sent
  • Demands start and stop bits that offer byte timing and elevates overhead
  • Parity generally utilized to verify accurate reception
This definition was written in the context of Data Transmission
Share this:

Connect with us

Email Newsletter

Join thousands of others with our weekly newsletter

The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.