Final answer:
Among the options listed, the Blackberry router is NOT electronic equipment used for IoT prototyping, as Blackberry is not known to manufacture routers for this purpose.
Step-by-step explanation:
The item among the options that is NOT electronic equipment used for IoT prototyping is C. Blackberry router. Here's why: Arduino microcontroller: Arduino is a popular open-source electronics platform based on easy-to-use hardware and software. It's a microcontroller that's widely used for building digital devices and interactive objects that can sense and control objects in the physical and digital world. Raspberry Pi microprocessor: Raspberry Pi is a small, affordable computer that you can use to learn to program and build projects. As a microprocessor, it can run an operating system and carry out multiple tasks, making it suitable for IoT prototyping.
LED: While an LED (Light Emitting Diode) is not a computing device like the other options, it is a commonly used component in IoT projects as an indicator or for creating light-based interactions. Blackberry, known for its mobile phones, does not manufacture routers for IoT prototyping, making it the incorrect option among those listed. Typically, routers are used to manage network traffic, but they are not exclusive to IoT prototyping, and Blackberry routers do not exist in this context.