A central processing unit (CPU) is a circuit within a piece of technology such as computers and phones that carries out the basic instruction of a specific program. The CPU consists of three major parts. The arithmetic logic unit (ALU) which performs the arithmetic and logic operations, the control unit (CU) which extracts memory to decode them, and then the immediate access store (IAS) which allows the memory available for programs. The CPU is a part of the motherboard where the information stays stored and the way CPU’s stay contemporary is that they are constantly decreasing the size of the transistors and increasing the KHz to a multi core GHz. This makes the CPU work faster and do more instruction. For example, back then the first processor was 740 KHz with omly 92,000 instructions a second. Now, processors are multi core and can take 100 billion instructions a second. For modern day devices such as phones and tablets, the CPU is paired with a SoC which allows for the pieces of technology to do more than just the basic functions of a standard CPU. A CPU used to only have a single core meaning it could only perform a single task. To try and keep the CPU relevant and up to date, the multi core processing system came out and changed the game for technology.
https://www.digitaltrends.com/computing/what-is-a-cpu/ https://www.computerhope.com/issues/ch001380.htm
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