Components of an Embedded System

The components of an embedded system are : Hardware, Software and time operating system.

i) Hardware

• Power Supply
• Processor
• Memory
• Timers
• Serial communication ports
• Output/Output circuits
• System application specific circuits

ii) Software:

The application software is required to perform the series of tasks.
An embedded system has software designed to keep in view of three constraints:
• Availability of System Memory
• Availability of processor speed
• The need to limit power dissipation when running the system continuously in
cycles of wait for events, run , stop and wake up.

iii) Real Time Operating System (RTOS):

It supervises the application software and provides a mechanism to let the processor run a process as per scheduling and do the switching from one process (task) to another process.

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