A system is an arrangement in which all its units combine to work
together according to a set of rules, programs, or plans.
It can also be defined as a way of working, organizing, or doing one
or many tasks according to a fixed plan.
what is an Embedded System?
Embedded means something that is attached to another thing. An embedded system can be thought of as a computer hardware system having software embedded in it. An embedded system can be an independent system or it can be a part of a large system. An embedded system is a microcontroller or microprocessor-based system that is designed to perform a specific task. For example, a fire alarm is an embedded system; it will sense only smoke.
An Embedded System has three components:
Hardware
Application Software
Real-Time Operating system (RTOS)
Hardware: Hardware refers to physically used components that are physically connected within an embedded system. It comprises of a microcontroller-based integrated circuit, power supply, LCD, etc.
Application Software :
Application software allows the user to run a variety of applications on an Embedded System. It may concurrently perform a series of tasks or processes or threads.
Real Time Operating system (RTOS) :
Real-time operating systems are specially designed to strictly follow the time limits. The actual focus of the real-time operating system is to complete the given task within the time limits.
It supervises the application software and provides mechanism to let the processor run a process as per scheduling by following a plan to control the latencies. Real Time Operating system (RTOS) . RTOS defines the way the system works. It sets the rules during the execution of application program.
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