What is architecture(ARM, FPGA)?

Question

Electronics

What is FPGA and ARM, DSP are technologies and architectures? How, for example, to build your own processor, an electronic bracelet, what do you need to learn for this and where to move?
In general, tell us briefly what for what and what to use

Answer 1

banned on wikipedia
ARM - the architecture of a particular family of processors, describes the set of hardware modules and commands executed by the circuit so that it can be considered an ARM processor
FPGA - Programmable Logic Integrated Circuit. contains a set of logical elements (AND, OR, NOT, XOR, etc.) and modules (adders, counters, comparators, etc.) and a programmable matrix of connections between them. allows you to quickly create a working logic circuit. depending on the hardware capabilities, it can create full-fledged processors "inside itself".
DSP stands for Digital Signal Processor. the name of a whole section of specialized signal processors in the form of digital sequences. a direction of development of logic circuits that is very different from general-purpose processors.
First, read and understand something from the basic definitions of the chosen topic (there are a huge number of books in the "processor for a teapot" format) and then ask questions.