1. Lecture 3&4 Components of the computer

2. Computer components

3. Computer components (cont.) computer hardware It is Pieces and accessories that make up the device which is a component can be touched and seen.

4. Computer components (cont.) Computer software It is a component of intangible, but is dealing with it when you run a computer which includes: 1.operating systems 2.programming languages 3.software applications.

5. Components of Hardware

6. Computer cases Tower and Desktop Cases

7. Inside the computer case

8. Central Processing Unit (CPU)  The brain of a computer  controls information and tells other parts what to do.  The type of CPU in a computer also determines how fast that computer can operate.  A CPU generates lots of heat, so there is usually a small fan nearby to cool it down.  Is one of the units are installed inside the computer box

9. CPU functions 1.Receive orders from input units and processing and then taken out through the output units 2.Perform mathematical and logical operations (addition, subtraction, multiplication, division) 3.Detection of outreach unit’s computer when it runs 4.Ensure the integrity of the parts connected to computer.

10. memory unit Memory consists of a set of electronic circuits that keep data and commands needed by the processor when performing various operations.

11. Types of Memory  Random Access Memory (RAM)  Read only memory ( ROM)

12. RAM Used to hold temporary data during operation of the device and work on it lose their contents once the device is switched off or power outage so the data is saved in units called Storage unit before shutting down the computer

13. ROM  Retain only the basic data needed by the device to start operating.  maintains information on the manufacturer does not lose its contents when you turn off the device or power outages.

14. Motherboards Is the main component of a computer?? because they are the link between the parts of the computer, which is installed inside the computer box and prove by some other units.

15. Functions of Motherboard 1. Distribution of electric power. 2.A bridge for the transfer of information. motherboard working on delivery of information to and from the drives to and from the processor and memory using gray bars called bars the transfer of information.

16. Drives Is a hardware that is used to read the contents of the data discs or write data to disk every type of disk drive has a special read and write it using a technique vary according to type of disc. Ex: CD-ROM drives use laser technology to read or write data.