would u mind telling me please I'm really interested in this kind of stuffs.
What makes ARM processors so significant?
Good question =)
The technology behind ARM processors is good - they are small, and energy efficient. ARM also produces lots of different processor designs, so no matter what type of device you are trying to build there is probably a processor out there which provides your performance and feature set requirements at "the right price".
The business model behind ARM is also very influential. ARM designs processors - not just CPUs, but also GPUs and video encode/decoders - but doesn't actually build the physical chips. ARM licenses the designs to other companies who then design the rest of the chip around the processor cores, and then get it manufactured and packaged into a physical device. There are a HUGE number of companies all over the world designing, building, and selling ARM chips, both as customized designs for use in house products, or for selling off the shelf to OEM manufacturers who build other things (smart phones, networking routers, washing machines, cars, industrial control systems, etc). This makes the ARM ecosystem very competitive - which drives innovation - and means that there are chip designs for pretty much every application you could possibly want, from tiny $1 microcontrollers to high-end multi-core server and networking chips containing lots of very high performance processor cores.
Kind regards, Pete