CPU What is the purpose of the CPU

CPU

What is the purpose of the CPU? 2

YOU WILL: define the main functions of CPU � compare CPU performance. 3

CPU (Central Processing Unit or processor) ▪ controls other parts of a computer like human brain controls the body. ▪ CPU works on tasks(instructions). ▪ It reads the list of instructions one by one. 4

processor процессор 7

core ядро 13

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CPU ALU is a part of CPU. ALU (Arithmetic Logic Unit) does simple arithmetic and logical operations. One or more ALUs get data from Cache and perform instructions of the CPU. Then ALU stores the result again in the Cache. The control unit (CU) is a component of a computer’s central processing unit (CPU) that directs the operation of the processor. It tells the computer’s memory, arithmetic/logic unit and input and output devices on how to respond to a program’s instructions. 17

Types of socket A socket is a place where we set a CPU. Motherboards have different socket types. 18

Number of Cores CPU can have several cores. Number of cores affects the performance of a CPU. 19

CPU’s speed is measured in Megahertz (MHz) and Gigahertz (GHz). - One MHz processes one million instructions per second. - One GHz processes one billion instructions per second. Today most CPUs run at a speed of 2 - 3 GHz. 20

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“ 1. Explain how does a CPU work? 2. Compare which of the followings is better “Intel i 3” with 2 cores or “AMD A-series” with 4 cores. Explain why. 22

THANKS! Any questions? 23