lesson 6 about operating system and its usage.pptx
- 1. Central Processing Unit The Central Processing Unit – (CPU) can be identified as a digital circuit that processes data according to given instructions. Whatever task performed by the computer, in all such instances, the Central Processing Unit runs in the background. While the Central Processing Unit can’t be observed from the outside, it is positioned (fixed) on the motherboard, inside the system unit.
- 2. Location of the Central Processing Unit System Unit Motherboard Central Processing Unit
- 3. Let’s identify the Components of the Central Processing Unit The Central Processing Unit consists of three main components. 1. Arithmetic & Logical Unit 2. Control Unit 3. Memory Registers
- 4. Arithmetic and Logical Unit Mathematical and logical functions are performed in the Arithmetic and Logical Unit. The functions of this unit can be further divided into two main sub-functions. 1. Mathematical Functions Mathematical calculations such as addition, subtraction, multiplication and division. Eg : 2 + 3 = 5 2. Logical Functions Logical operations such as comparison of two numbers. Eg : 3 > 2
- 5. Control Unit The Control Unit communicates between manipulates and controls the hardware connected to the computer. It also performs tasks such as controlling input and output data, ensuring that data is sent to right place at the right time and being alert whether relevant signals are successfully received.
- 6. Memory Registers It temporarily stores data and instructions that are being used by the Central Processing Unit. The storage capacity of the memory registers is very low when compared with other memory devices like hard disk. However its data access speed is very high.
- 7. Activity 1. What is mean by the term CPU? 2. What is central processing unit? 3. What are the components of CPU?
- 8. Let’s learn about the evolution of Central Processing Unit The Central Processing Unit of a computer system can be divided into four generations based on the electronic technology used to manufacture it. 1. First Generation (vacuum tubes) 2. Second Generation (transistor) 3. Third Generation (integrated circuit) 4. Fourth Generation (microprocessor)
- 9. Homework 1. Name the main parts of central processing unit and briefly describe the function of those.
- 10. Thank you