computer system servicing for junior high school or grade 11 and 12

it takles the basic concepts or study for css

1. What Am I?

2. TYPES OF COMPUTER AND OPERATING SYSTEMS Prepared by: Eigeman Go

3. Different Types of computer Desktop Computers design typically found in top of desk, Desktop model computers are broad and low, whereas tower model computers are narrow and tall.

4. Different Types of computer Laptop A small, portable computer -- small enough that it can sit on your lap. Nowadays, a computer laptop is more frequently called a notebook computer, though technically laptops are somewhat larger in size than notebooks in both thickness and weight.

5. Different Types of computer Tablet A tablet is a type of notebook computer that has an LCD screen on which the user can write using finger and swipe actions or by using a special-purpose pen, or stylus.

6. Different Types of computer Smartphone Smartphones are a handheld device that integrates mobile phone capabilities with the more common features of a handheld computer or PDA. Smartphones allow users to store information, e-mail, install programs, along with using a mobile phone in one device.

7. COMPUTER OPERATING SYSTEMS An operating system (OS), in its most general sense, is software that allows a user to run other applications on a computing device. The operating system manages a computer's software hardware resources, including: • Input devices such as a keyboard and mouse. • Output devices such as display monitors and printers. • Network devices such as modems, routers and network connections. • Storage devices such as internal and external drives.

8. Classification of Operating systems Multi-user: Allows two or more users to run programs at the same time. Some operating systems permit hundreds or even thousands of concurrent users. Multiprocessing : Supports running a program on more than one CPU. Multitasking : Allows more than one program to run concurrently. Multithreading : Allows different parts of a single program to run concurrently. Real time : Responds to input instantly. General-purpose operating systems, such as DOS and UNIX, are not real-time.

9. Most Popular Desktop Operating Systems

10. Most Popular Desktop Operating Systems Windows Microsoft Windows is a family of operating systems for personal and business computers. Windows dominates the personal computer world, offering a graphical user interface (GUI), virtual memory management, multitasking, and support for many peripheral devices.

11. Most Popular Desktop Operating Systems Mac Mac OS is the official name of the Apple Macintosh operating system. Mac OS features a graphical user interface (GUI) that utilizes windows, icons, and all applications that run on a Macintosh computer have a similar user interface.

12. Most Popular Desktop Operating Systems Linux Linux is a freely distributed open source operating system that runs on a number of hardware platforms. The Linux kernel was developed mainly by Linus Torvalds and it is based on Unix.

13. Most Popular Desktop Operating Systems According to Netmarketshare.com, the most used desktop operating system and versions used on PCs (Desktops and laptops) from January to November, 2019 are: Windows 87.40% Mac OS 10.06% Linux 1.95% Chrome OS 0.39% Unknown 0.20% BSD 0.01%

14. Mobile Operating Systems

15. Mobile Operating Systems Popular mobile operating systems include iPhone OS / iOS and Android OS. The mobile OS is responsible for determining the functions and features available on your device, such as thumb wheel, keyboards, WAP, synchronization with applications, email, text messaging and more. The mobile OS will also determine which third-party applications(mobile apps) can be used on your device.

16. ACTIVITY: A . Multiple choice: Write the letter of the correct answer into your notebook. 1. It allows two or more users to run programs at the same time. Some operating systems permit hundreds or even thousands of concurrent users. a. Multi-user: c. Multiprocessing b. Multitasking d. Multithreading 2. It allows different parts of a single program to run concurrently. a. Multi-user: c. Multiprocessing b. Multitasking d. Multithreading 3. Allows more than one program to run concurrently. a. Multi-user: c. Multiprocessing b. Multitasking d. Multithreading

17. ACTIVITY: 4. Supports running a program on more than one CPU. a. Multi-user c. Multiprocessing b. Multitasking d. Multithreading 5. It is a family of operating systems for personal and business computers. a. Windows c. linux b. Mac d. Real time 6. Responds to input instantly. General-purpose operating systems, such as DOS and UNIX, are not real-time. a. Windows c. linux b. Mac d. Real time

18. 7. It is a freely distributed open source operating system that runs on a number of hardware platforms. a. Windows c. linux b. Mac d. Real time 8. It is the official name of the Apple Macintosh operating system. a. Windows c. linux b. Mac d. Real time 9. According to Netmarketshare.com, what is the most OS used desktop operating system? a. Windows c. linux b. Mac d. Real time 10. According to Netmarketshare.com, what is in the 3rd OS used desktop operating system? a. Windows c. linux b. Mac d. Real time

19. ACTIVITY: Direction: Identify the correct answer write your answer to your notebook. 1. It is a handheld device that integrates mobile phone capabilities with the more common features of a handheld computer or PDA. 2. A computer designed to fit comfortably on top of a desk, typically with the monitor sitting on top of the computer. 3. It allows users to store information, e-mail, install programs, along with using a mobile phone in one device. 4. This device is small enough that it can sit on your lap. 5. It is type of notebook computer that has an LCD screen on which the user can write using finger and swipe actions or by using a special-purpose pen, or stylus.

20. Assignment: Draw one (1) hardware component of the computer then give its function. Then next meeting present it to the class . Example: Keyboard, Mouse, Monitor