Network Servers and Services Lesson 012: Embedded Systems

Embedded Systems

Computer system designed to perform specific and dedicated functions, and are considered static environments where frequent changes are not allowed.

Where are embedded systems most often utilized?

In manufacturing or automation.

What is an example of an embedded system?

A microcontroller in a medical drip system.

What is the biggest challenge when it comes to embedded systems and why?

Identifying and correcting security issues, due to the lack of support for frequent updates.

How are the network security challenges mitigated with embedded systems?

By connecting them to a separate network and separate from the Internet in general.

What does PLC stand for?

Programmable Logic Controller.

Programmable Logic Controller

Type of digital computer used in industrial or outdoor settings.

What can a PLC do?

Automate and monitor mechanical systems.

What do PLCs run on and why?

On firmware, because they are embedded systems.

What limited functionality does PLC provide?

The ability to be patched and reprogrammed, since it is firmware.

What is another name for PLC firmware?

Software-on-a-Chip.

On average, how often is a PLC patched?

Every six months to two years.

What does RTOS stand for?

Real-time Operating System.

Real-time Operating System

Prioritizes deterministic execution of operations that ensure consistent response for time-critical tasks.

Where are RTOSs most utilized?

In embedded systems that are used in critical applications, like nuclear power plants or piloting systems.

System-on-a-Chip

Processor integrates the platform functionality of multiple logical controllers onto a single chip.

What is the benefit to using a system-on-a-chip?

They are extremely power efficient.

What is the most common use case for system-on-a-chip?

On devices that need to have an embedded system.

What is a use case example of system-on-a-chip?

A robot vacuum.