An ATM is an embedded system which utilizes a crowded computer to set up a network between a bank computer and an ATM itself. It also has a microcontroller to bear both input and output operations.
Medical equipments, Mobile phones, racing cars, smart phones, smart home system, Digital camera's, automated control of industrial machines, smart tv and almost everything in home, offices, industry, airplanes have embedded system applications. All these devices have computer embedded in them.
An embedded system is a microprocessor-based computer hardware system with software that is designed to perform a dedicated function, either as an independent system or as a part of a large system. Embedded system applications range from digital watches and microwaves to hybrid vehicles and avionics.
A calculator is the embedded system that was developed very early. In the calculator, we give input from the keyboard, the embedded system performs the gives function like Add, Subtract etc and displays the result on LCD. These calculators have the ability to perform the complex mathematical functions.
Three types of Embedded Systems are: 1) Small Scale, 2) Medium Scale, and 3) Sophisticated. Major difference between In Microprocessor and Microcontroller is that In Microprocessor, bit handling instruction is less while Microcontroller offers many kinds of bit handling instruction.
Code for embedded software is typically written in C or C++, but various high-level programming languages, such as Java, Python and JavaScript, are now also in common use to target microcontrollers and embedded systems.
Key Features of an Embedded System
- Embedded systems execute pre-programmed functions and they have a particular set of requirements.
- Embedded systems perform a specific function or a set of specific functions unlike a computer, which is used to carry out a wide number of functions.
Python can also be used to receive embedded system data that can be stored for analysis. Programmers can then use Python to develop parameters and other methods of analyzing that data.
Requirements for Devices Around Us: Embedded Systems, Part 2
- Performance. A real-time system must satisfy the timing needs and constraints of the operating environment.
- Efficiency.
- Reliability.
- Robustness.
- Safety.
- Security.
- Usability.
And an Arduino is one of those Embedded System Devices (called as an Embedded Development Board), which got very famous in the maker's community due to its free and open source nature. An Arduino can be used for making any kind of simple automated electronic projects.
To create software, the following basic components are needed: Operating systems (Windows CE, Yocto Linux, ThreadX, Nucleus RTOS) Languages (C, C++, Python, JavaScript, etc.) Tools (IDE, PDK, SDK, compiler toolchains, hardware and software debuggers (e.g. ST-Link, Segger))
How do Embedded Systems work? Embedded System works by incorporating a rugged motherboard into an industrial enclosure, with associated I/O (Input and Output) and a Embedded OS Software to fulfil a function in an embedded environment.
We can define application software as software that employs the capabilities of a computer to accomplish a dedicated task. Examples of application software are Microsoft Word, spreadsheets, VLC media player, Firefox or Google Chrome, accounting applications, photo editor, mobile apps such as video games, Whatsapp, etc.
If an embedded system is the combination of hardware and software, embedded software is a subset of that. Weighing in at only a few kilobytes, embedded software is written to optimally run on the specific hardware and microprocessor contained within a particular system.
An embedded device is an object that contains a special-purpose computing system. The system, which is completely enclosed by the object, may or may not be able to connect to the Internet. Embedded systems have extensive applications in consumer, commercial, automotive, industrial and healthcare markets.
Another reason why we need embedded systems is because general-purpose solution might also fail to meet a number of functional or performance requirements such as constraints in power-consumption, size-limitations, reliability or real-time performance etc.
