Last updated on October 28th, 2023 at 11:12 pm
Probably the least talked about type of computer is the embedded device. It is not as big or expensive as the supercomputer or mainframe computer. It is not meant to be used by a single individual like a desktop computer or mobile device. In fact, the purpose of embedded devices is completely different from these four. In this article, we will discuss the following:
- What an embedded computer is (definition of an embedded device);
- What embedded computers are used for;
- Types of embedded computers;
- The speed, storage capacity, and portability of embedded devices; and
- Examples of embedded computers (devices).
Definition of an embedded device:
An embedded device is a computer system that is designed to perform a special function or several specific functions within a larger machine. An embedded device is usually a combination of a microprocessor, memory, and input and output devices. Not all embedded devices have these three, however, but all are driven by a microprocessor. The scope of the embedded device is highly dependent on its function within the machine.
So now that you understand the concept of what an embedded device is, you may be asking the next logical question: What are embedded computers used for?
Are you interested in learning more about computers? Our article on the components of a computer system may interest you.
Uses of Embedded computers
An embedded computer is used to control the mechanical parts of the machine within which it is embedded to perform a specific task or set of tasks. They are usually an integral part of the everyday labor-saving devices we use.
For instance, in a microwave, the embedded computer is used to send commands to the machine. You enter instructions/commands into the keypad of your microwave. This command tells the machine what to do while it keeps track of the time. Once the task is completed (time runs out), the embedded system signals or commands the machine to stop.
An embedded computer may be your heart rate monitor that is embedded in your watch to keep track of your heartbeat in real-time.
Types of embedded computers
Like many other types of computers, there are different versions of embedded devices. These types reflect their uses. There are four types of embedded devices. These are:
- Stand-alone;
- Real-time;
- Networked; and
- Mobile.
Stand-alone embedded devices
Stand-alone embedded computers are devices that do not need to be connected to any host system. Examples of stand-alone embedded systems are:
- Microwave ovens;
- Washing machines;
- Cars; and
- Calculators.
Realtime embedded computer
Realtime embedded computers are those embedded devices that perform critical tasks within a set time frame that is so fast that they appear to be working in real-time. Real-time embedded systems are used in sectors where response time is of utmost importance. Some examples of real-time embedded devices are:
- The traffic light controller;
- The telemetry monitor is a device that is used in hospitals to monitor a patient’s heart rate, blood pressure, oxygen saturation, etc., on a continuous basis.
Networked embedded devices
Networked embedded devices are computing devices that need to be connected to a network in order to perform required tasks. These devices can be connected either wirelessly or via a wired network. Examples of networked embedded devices are:
- Automatic banking machines (ATMs); and
- Home and office security systems.
Mobile Embedded devices
Mobile embedded devices are small devices that have embedded computers encased in them. They are easily moved by a single person. Examples of mobile embedded devices are:
- Smart cameras; and
- MP3 players.