Ict 9 module 3, lesson 1.2 understanding computers
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This document discusses different types of computers. It begins by explaining how computer technology has allowed for vast data storage and processing capabilities. It then covers various classifications of computers including analog, digital and hybrid computers based on their operational principles. It also discusses classifications based on size and functionality, including mainframe computers, minicomputers, servers, supercomputers, and microcomputers. Finally, it covers different forms of personal computers like desktops, laptops, netbooks, PDAs, tablets, and wearable computers.
Ict 9 module 3, lesson 1.2 understanding computers
- 1. INFORMATION & COMMUNICATION TECHNOLOGY 9: COMPUTER HARDWARE SERVICING MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDING COMPUTER
- 2. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER A computer is one of the most brilliant inventions of mankind. Thanks to the computer technology, we were able to achieve storage and processing of huge amounts of data; we could rest our brains by employing computer memory capacities for storing information. 6/27/2017 Prepared by LMCadapan KNHS2017 2
- 3. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Due to computers, we have been able to speed up daily work, carry out critical transactions and achieve accuracy and precision in work. Computers of the earlier years were of the size of a large room and were required to consume huge amounts of electric power. 6/27/2017 Prepared by LMCadapan KNHS2017 3
- 4. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER However, with the advancing technology, computers have shrunk to the size of a small watch. Depending on the processing power and size of computers, they have been classified under various types.6/27/2017 Prepared by LMCadapan KNHS2017 4
- 5. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Let us look at the classification of computers. 6/27/2017 Prepared by LMCadapan KNHS2017 5
- 6. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Different Types of Computers Based on the operational principle of computers, they are categorized as analog, digital and hybrid computers. Analog Computers: These are almost extinct today. These are different from a digital computer because an analog computer can perform several mathematical operations simultaneously. It uses continuous variables for mathematical operations and utilizes mechanical or electrical energy. 6/27/2017 Prepared by LMCadapan KNHS2017 6
- 7. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Different Types of Computers Based on the operational principle of computers, they are categorized as analog, digital and hybrid computers. Digital Computers: They use digital circuits and are designed to operate on two states, namely bits 0 and 1. They are analogous to states ON and OFF. Data on these computers is represented as a series of 0s and 1s. 6/27/2017 Prepared by LMCadapan KNHS2017 7
- 8. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Different Types of Computers Based on the operational principle of computers, they are categorized as analog, digital and hybrid computers. Digital Computers: Digital computers are suitable for complex computation and have higher processing speeds. They are programmable. Digital computers are either general purpose computers or special purpose ones. 6/27/2017 Prepared by LMCadapan KNHS2017 8
- 9. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Different Types of Computers Based on the operational principle of computers, they are categorized as analog, digital and hybrid computers. Digital Computers: Special purpose computers, as their name suggests, are designed for specific types of data processing while general purpose computers are meant for general use. 6/27/2017 Prepared by LMCadapan KNHS2017 9
- 10. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Different Types of Computers Based on the operational principle of computers, they are categorized as analog, digital and hybrid computers. Hybrid Computers: These computers are a combination of both digital and analog computers. In this type of computers, the digital segments perform process control by conversion of analog signals to digital ones. 6/27/2017 Prepared by LMCadapan KNHS2017 10
- 11. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER A. Mainframe Computers B. Minicomputers C. Servers D. Super Computers E. Microcomputers Classification of Computers The following are the classification of the different types of computers based on their sizes and functionalities: Mainframe Computers: Large organizations use mainframes for highly critical applications such as bulk data processing and ERP. Most of the mainframe computers have the capacities to host multiple operating systems and operate as a number of virtual machines and can substitute for several small servers. 6/27/2017 Prepared by LMCadapan KNHS2017 11
- 12. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER A. Mainframe Computers B. Minicomputers C. Servers D. Super Computers E. Microcomputers Classification of Computers The following are the classification of the different types of computers based on their sizes and functionalities: Minicomputers: In terms of size and processing capacity, minicomputers lie in between mainframes and microcomputers. Minicomputers are also called mid-range systems or workstations. The term began to be popularly used in the 1960s to refer to relatively smaller third generation computers. 6/27/2017 Prepared by LMCadapan KNHS2017 12
- 13. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER A. Mainframe Computers B. Minicomputers C. Servers D. Super Computers E. Microcomputers Classification of Computers The following are the classification of the different types of computers based on their sizes and functionalities: Servers: They are computers designed to provide services to client machines in a computer network. They have larger storage capacities and powerful processors. Running on them are programs that serve client requests and allocate resources like memory and time to client machines.6/27/2017 Prepared by LMCadapan KNHS2017 13
- 14. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER A. Mainframe Computers B. Minicomputers C. Servers D. Super Computers E. Microcomputers Classification of Computers The following are the classification of the different types of computers based on their sizes and functionalities: Servers: Usually they are very large in size, as they have large processors and many hard drives. They are designed to be fail-safe and resistant to crash. 6/27/2017 Prepared by LMCadapan KNHS2017 14
- 15. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER A. Mainframe Computers B. Minicomputers C. Servers D. Super Computers E. Microcomputers Classification of Computers The following are the classification of the different types of computers based on their sizes and functionalities: Supercomputers: The highly calculation- intensive tasks can be effectively performed by means of supercomputers. Quantum physics, mechanics, weather forecasting, molecular theory are best studied by means of supercomputers. Their ability of parallel processing and their well- designed memory hierarchy give the 6/27/2017 Prepared by LMCadapan KNHS2017 15
- 16. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER A. Mainframe Computers B. Minicomputers C. Servers D. Super Computers E. Microcomputers Classification of Computers The following are the classification of the different types of computers based on their sizes and functionalities: Microcomputers: A computer with a microprocessor and its central processing unit it is known as a microcomputer. They do not occupy space as much as mainframes do. 6/27/2017 Prepared by LMCadapan KNHS2017 16
- 17. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER A. Mainframe Computers B. Minicomputers C. Servers D. Super Computers E. Microcomputers Classification of Computers The following are the classification of the different types of computers based on their sizes and functionalities: Microcomputers: When supplemented with a keyboard and a mouse, microcomputers can be called personal computers. A monitor, a keyboard and other similar input output devices, computer memory in the form of RAM and a power supply unit come packaged in a microcomputer.6/27/2017 Prepared by LMCadapan KNHS2017 17
- 18. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER A. Mainframe Computers B. Minicomputers C. Servers D. Super Computers E. Microcomputers Classification of Computers The following are the classification of the different types of computers based on their sizes and functionalities: Microcomputers: These computers can fit on desks or tables and prove to be the best choice for single-user tasks. 6/27/2017 Prepared by LMCadapan KNHS2017 18
- 19. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Desktop Laptop Netbook PDA Tablet Wearable Computers Personal computers come in different forms such as desktops, laptops and personal digital assistants. Let us look at each of these types of computers. Desktops: A desktop is intended to be used on a single location. The spare parts of a desktop computer are readily available at relatively lower costs. Power consumption is not as critical as that in laptops. Desktops are widely popular for daily use in the workplace and households.6/27/2017 Prepared by LMCadapan KNHS2017 19
- 20. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Desktop Laptop Netbook PDA Tablet Wearable Computers Personal computers come in different forms such as desktops, laptops and personal digital assistants. Let us look at each of these types of computers. Laptops: Similar in operation to desktops, laptop computers are miniaturized and optimized for mobile use. Laptops run on a single battery or an external adapter that charges the computer batteries. 6/27/2017 Prepared by LMCadapan KNHS2017 20
- 21. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Desktop Laptop Netbook PDA Tablet Wearable Computers Personal computers come in different forms such as desktops, laptops and personal digital assistants. Let us look at each of these types of computers. Laptops: Similar in operation to desktops, laptop computers are miniaturized and optimized for mobile use. Laptops run on a single battery or an external adapter that charges the computer batteries. 6/27/2017 Prepared by LMCadapan KNHS2017 21
- 22. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Desktop Laptop Netbook PDA Tablet Wearable Computers Personal computers come in different forms such as desktops, laptops and personal digital assistants. Let us look at each of these types of computers. Netbooks: They fall in the category of laptops, but are inexpensive and relatively smaller in size. They had a smaller feature set and lesser capacities in comparison to regular laptops, at the time they came into the market. 6/27/2017 Prepared by LMCadapan KNHS2017 22
- 23. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Desktop Laptop Netbook PDA Tablet Wearable Computers Personal computers come in different forms such as desktops, laptops and personal digital assistants. Let us look at each of these types of computers. Personal Digital Assistants (PDAs): It is a handheld computer and popularly known as a palmtop. It has a touch screen and a memory card for storage of data. PDAs can also be used as portable audio players, web browsers and smart phones. Most of them can access the Internet by means of Bluetooth or Wi-Fi communication. 6/27/2017 Prepared by LMCadapan KNHS2017 23
- 24. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Desktop Laptop Netbook PDA Tablet Wearable Computers Personal computers come in different forms such as desktops, laptops and personal digital assistants. Let us look at each of these types of computers. Tablet Computers: Tablets are mobile computers that are very handy to use. They use the touch screen technology. Tablets come with an onscreen keyboard or use a stylus or a digital pen. Apple's iPod redefined the class of tablet computers. 6/27/2017 Prepared by LMCadapan KNHS2017 24
- 25. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Desktop Laptop Netbook PDA Tablet Wearable Computers Personal computers come in different forms such as desktops, laptops and personal digital assistants. Let us look at each of these types of computers. Wearable Computers: A record-setting step in the evolution of computers was the creation of wearable computers. These computers can be worn on the body and are often used in the study of behavior modeling and human health. 6/27/2017 Prepared by LMCadapan KNHS2017 25
- 26. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Desktop Laptop Netbook PDA Tablet Wearable Computers Personal computers come in different forms such as desktops, laptops and personal digital assistants. Let us look at each of these types of computers. Wearable Computers: Military and health professionals have incorporated wearable computers into their daily routine, as a part of such studies. When the users' hands and sensory organs are engaged in other activities, wearable computers are of great help in tracking human actions.6/27/2017 Prepared by LMCadapan KNHS2017 26
- 27. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Desktop Laptop Netbook PDA Tablet Wearable Computers Personal computers come in different forms such as desktops, laptops and personal digital assistants. Let us look at each of these types of computers. Wearable Computers: Wearable computers do not have to be turned on and off and remain in operation without user intervention. 6/27/2017 Prepared by LMCadapan KNHS2017 27
- 28. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER QUIZ 6/27/2017 Prepared by LMCadapan KNHS2017 28
- 29. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Direction: Identify the type of computer being described in the following sentences and write your answer on a separate sheet of paper. 1. These are mobile computers that are very handy to use. 6/27/2017 Prepared by LMCadapan KNHS2017 29
- 30. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Direction: Identify the type of computer being described in the following sentences and write your answer on a separate sheet of paper. 2. They are computers designed to provide services to client machines in a computer network. 6/27/2017 Prepared by LMCadapan KNHS2017 30
- 31. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Direction: Identify the type of computer being described in the following sentences and write your answer on a separate sheet of paper. 3. They are also called mid-range systems or workstations. 6/27/2017 Prepared by LMCadapan KNHS2017 31
- 32. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Direction: Identify the type of computer being described in the following sentences and write your answer on a separate sheet of paper. 4. A computer with a microprocessor and its central processing unit. 6/27/2017 Prepared by LMCadapan KNHS2017 32
- 33. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Direction: Identify the type of computer being described in the following sentences and write your answer on a separate sheet of paper. 5. They fall in the category of laptops, but are inexpensive and relatively smaller in size. 6/27/2017 Prepared by LMCadapan KNHS2017 33
- 34. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Direction: Identify the type of computer being described in the following sentences and write your answer on a separate sheet of paper. 6. A type of computer which is intended be used on a single location. 6/27/2017 Prepared by LMCadapan KNHS2017 34
- 35. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Direction: Identify the type of computer being described in the following sentences and write your answer on a separate sheet of paper. 7. They use digital circuits and are designed to operate on two states, namely bits 0 and 1. 6/27/2017 Prepared by LMCadapan KNHS2017 35
- 36. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Direction: Identify the type of computer being described in the following sentences and write your answer on a separate sheet of paper. 8. Computers that have the capacities to host multiple operating systems and operate as a number of virtual machines and can substitute for several 6/27/2017 Prepared by LMCadapan KNHS2017 36
- 37. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Direction: Identify the type of computer being described in the following sentences and write your answer on a separate sheet of paper. 9. It is a handheld computer and popularly known as a palmtop. 6/27/2017 Prepared by LMCadapan KNHS2017 37
- 38. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER Direction: Identify the type of computer being described in the following sentences and write your answer on a separate sheet of paper. 10. These computers can be worn on the body and are often used in the study of behavior modeling and human health. 6/27/2017 Prepared by LMCadapan KNHS2017 38
- 39. MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDI NG COMPUTER END OF MODULE 3, LESSON 1: PLAN AND PREPARE FOR INSTALLATION UNDERSTANDING COMPUTER 6/27/2017 Prepared by LMCadapan KNHS2017 39