Lesson 01 introduction to computer
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The document provides an introduction to computers and information communication technology (ICT). It defines a computer and ICT, describes the internal and external components of a computer system including the central processing unit, memory, storage devices, ports, and peripherals. It also discusses types of personal computers, software including operating systems and applications. The document covers computer viruses, how they spread, examples like worms and ransomware, and methods of protection like antivirus software and safe internet practices. It aims to develop skills in using hardware like mice, keyboards and understanding basic computer concepts.
Lesson 01 introduction to computer
- 2. Lesson 01: Introduction to Computer OBJECTIVES: Illustrate the computer parts and accessories and its functions Evaluate the disadvantages of Cybercrimes Developed the skills in manipulating the mouse and keyboard Apply the correct methods of typing PAGE 2
- 3. HOW YOU USE ICT IN YOUR LIFE? PAGE 3
- 4. What is ICT? Information Communication Technology –use of different communication technologies such as mobile phones, telephone, Internet, etc. to locate, save, send and edit information. PAGE 4
- 5. What is Computer? A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. You may already know that you can use a computer to type documents, send email, play games, and browse the Web. You can also use it to edit or create spreadsheets, presentations, and even videos. PAGE 5 https://edu.gcfglobal.org/en/computerbasics/what-is-a-computer/1/
- 6. Elements of Computer 1. Hardware - refers to the physical units. 2. Software - is as vital to effective use of a computer as the hardware. 1. System Software 2. Application Software 3. Human Ware 1. Systems analyst, who studies information and processing requirements. 2. Programmer, who has a skill in writing computer instructions. 3. Computer operator, who operates the computer. PAGE 6
- 7. Elements of Computer 4. User Programs - A program consists of a set of instructions to the computer to perform operations which accomplish processing task. A data processing job may require a number of programs PAGE 7 https://www.businessmanagementideas.com/information-technology/elements-of-a- computer-system-information-technology/10139
- 8. Type of Personal Computer Personal Computer – a machine designed for use at a desk, and never pushed anywhere. It has the metal box called as system unit. PAGE 8 Netbook PC– a compact computer which is built to fold up like a carrying notebook.
- 9. Type of Personal Computer PAGE 9 Tablet PC– a handheld device consisting of a touch-sensitive display panel that is mounted on a plastic tablet frame with a small computer inside. Smartphone– a mobile phone that can run computer application and has internet access capability.
- 10. Basic Parts of the computer – Internal PAGE 10 The motherboard is at the center of what makes a PC work. It houses the CPU and is a hub that all other hardware runs through.
- 11. Basic Parts of the computer – Internal PAGE 11 The CPU (Central Processing Unit or processor) is responsible for processing all information from programs run by your computer.
- 12. Basic Parts of the computer – Internal PAGE 12 also known as volatile memory, stores data regarding frequently accessed programs and processes. (It's called volatile memory because it gets erased every time the computer restarts.)
- 13. Basic Parts of the computer – Internal PAGE 13 The hard drive is a storage device responsible for storing permanent and temporary data. It is essentially anything saved or installed to a computer: for example, computer programs, family photos, operating system, word-processing documents, and so on.
- 14. Basic Parts of the computer – Internal PAGE 14 A power supply unit, commonly abbreviated as PSU, does more than just supply your computer with power. It is the point where power enters your system from an external power source and is then allocated by the motherboard to individual component hardware.
- 15. Basic Parts of the computer – Internal PAGE 15 System Unit referred to as a box, main unit, and system box, a system unit is the case that contains all the main parts of a computer.
- 16. Basic Computer Parts - External PAGE 16 Mouse is a handheld hardware. Controls a cursor in a GUI. Can move and select text, icons, files, and folders on your computer.
- 17. Basic Computer Parts - External PAGE 17 a monitor is an output device that displays video images and text. referred to as a VDT (video display terminal) and VDU (video display unit)
- 18. Basic Computer Parts - External PAGE 18 A computer keyboard one of the primary input devices used with a computer. composed of buttons that create letters, numbers, and symbols, and other functions.
- 19. Basic Computer Parts - External PAGE 19 A speaker is an output hardware device that connects to a computer to generate sound. The signal used to produce the sound that comes from a computer speaker is created by the computer's sound card.
- 20. Basic Computer Parts - External PAGE 20 It is an output device that takes the electronic data stored on a computer or other device and generates a hard copy.
- 21. DISADVANTAGES OF CYBERCRIME CYBERCRIMES 1. Phishing/Spoofing – the act of sending multiple emails to multiple users in hopes of having a number of them clicking on the links or malware attached to the email. 2. Blackmail/Extortion – the act of using the internet to threaten or damage someone’s reputation to exert money or anything else of value. PAGE 21
- 22. DISADVANTAGES OF CYBERCRIME 3. Accessing Stored Communication - or hacking; the act of obtaining unauthorized access to data from a computer network. 4. Sports Betting – the act of wagering on any sports event over the internet. In some countries, gambling (including sports betting) is illegal even if you are doing it over the internet. PAGE 22
- 23. DISADVANTAGES OF CYBERCRIME 5. Non Delivery of Merchandise – the act of devising a scheme wherein the culprit posts an item or service for sale on the internet and once the transactions have been done, does not really give an item or service. 6. Electronic Harassment – the act of anonymously using the internet to harass, abuse, threaten or annoy other people. PAGE 23
- 24. DISADVANTAGES OF CYBERCRIME 7. Prostitution – the act of using the internet to engage in prostitution. 8. Drug Trafficking – the act of selling illegal substances using the internet. 9. Criminal Copyright Infringement – the act of piracy mainly for financial gain. PAGE 24
- 27. Software 1. System Software 1. Operating System - "OS," is software that communicates with the hardware and allows other programs to run. 2. Utility – a software installed with the operating system. 2. Application Software - a type of computer program that performs a specific personal, educational, and business function. PAGE 27
- 28. Computer Virus A computer virus is a malicious piece of computer code designed to spread from device to device. A subset of malware, these self-copying threats are usually designed to damage a device or steal data. PAGE 28
- 29. How does a computer get a virus? Sharing music, files, or photos with other users Visiting an infected website Opening spam email or an email attachment Downloading free games, toolbars, media players and other system utilities Installing mainstream software applications without thoroughly reading license agreements PAGE 29
- 30. How computer viruses spread? Viruses can be spread several ways, including via networks, discs, email attachments or external storage devices like USB sticks. Since connections between devices were once far more limited than today, early computer viruses were commonly spread through infected floppy disks. PAGE 30
- 31. Example of Computer Virus Worms - A worm is a type of virus that, unlike traditional viruses, usually does not require the action of a user to spread from device to device. Trojans - As in the myth, a Trojan is a virus that hides within a legitimate- seeming program to spread itself across networks or devices. Ransomware - Ransomware is a type of malware that encrypts a user’s files and demands a ransom for its return. Ransomware can be, but isn’t necessarily, spread through computer viruses. PAGE 31
- 32. Computer Virus Protection Use antivirus protection and a firewall Get antispyware software Always keep your antivirus protection and antispyware software up-to-date Update your operating system regularly Increase your browser security settings Avoid questionable Websites PAGE 32
- 33. Computer Virus Protection Only download software from sites you trust. Carefully evaluate free software and file-sharing applications before downloading them. Don't open messages from unknown senders Immediately delete messages you suspect to be spam PAGE 33
- 34. THANK YOU! PAGE 34