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Computer Science and Information Technology Ancillary Materials

Introduction to computing (lecture slides).

William Johnson , Georgia State University Follow Julia Benson-Slaughter , Georgia State University Follow

Material Type

Lecture Slides

Publication Date

Spring 2015

Course Title

Introduction to Computing

Course Number

This set of lecture slides for Introduction to Computer Science was created under a Round One ALG Textbook Transformation Grant.

Creative Commons License

A downloadable version of the CNX text is available as an additional file.

Recommended Citation

Johnson, William and Benson-Slaughter, Julia, "Introduction to Computing (Lecture Slides)" (2015). Computer Science and Information Technology Ancillary Materials . 1. https://oer.galileo.usg.edu/compsci-ancillary/1

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Basic Introduction to Computers

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Types of Computers

Jul 05, 2014

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Types of Computers. When selecting a computer that is best for your needs, you should consider what purpose it will serve in your home or business, and whether it should be mobile for travel. Types of Computers. Desktop A desktop is by far the most common type of computer.

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Types of Computers When selecting a computer that is best for your needs, you should consider what purpose it will serve in your home or business, and whether it should be mobile for travel.

Types of Computers Desktop A desktop is by far the most common type of computer. Most desktop systems come with a separate computer case, monitor, keyboard, and mouse. On older desktops, the computer case lies flat on the desk with the monitor sitting on top. Almost all newer systems use a tower case that sits upright. You can place this case either on a desk or on the floor. Many newer desktops are Media Center PCs that enable you to play movies, view pictures, and listen to music through your TV and stereo.

Types of Computers Notebook A notebook is a computer that combines the case, monitor, keyboard, and mouse in one unit. It is also called a laptop or a portable. Notebooks are light — usually only four to six pounds — and so you can take them out of your office or home. Most notebooks are just as powerful as a desktop system.

Types of Computers Tablet PC A tablet PC is a computer that looks similar to a small notebook. However, the tablet PC screen pivots so that it lies on top of the keyboard, making it look like a writing tablet. You can use a digital pen to input your data, or select items on the screen.

Types of Computers Handheld PC A handheld PC is a very small computer — usually weighing less than a pound — that you can hold comfortably in your hand or carry in a jacket pocket. A handheld PC is also called a personal digital assistant (PDA) or palmtop. Most people use a handheld PC to store their schedules and check their e-mail while out of the office. A newer type of handheld computer is the ultra mobile PC (UMPC), which comes with a relatively large screen and can run a wider variety of programs than most handheld PCs.

Types of Computers Server A server is a powerful computer that acts as a central resource for a number of other computers that are connected to it. These other computers can be desktops or stripped-down terminals that use the server to run programs and store data. Some servers are mainframes, which are giant computers that run large-scale operations, such as airline reservation systems.

Tour the PersonalComputer Main Personal Computer Parts Learning to use a personal computer is much easier if you know how a typical system is laid out and what each major part does.

Tour the Personal Computer

Tour the Personal Computer Computer Case The computer case, also called the system unit or console, holds the electronic chips and devices that make the computer work. The outside of the case has an on/off switch, and the rear of the case is where you plug in the other computer components Monitor The monitor, also called the screen or display, is a TV-like device that the computer uses to display text, images, and other information.

Tour the Personal Computer Keyboard The keyboard is a typewriter-like device that you use to type information and enter instructions for the computer to follow. Mouse The mouse is a hand-operated pointing device that you use to select or move items on the screen, as well as to provide instructions for the computer to follow.

Tour the Personal Computer Personal Computer Accessories

Tour the Personal Computer • Printer • A printer is a device that you use to print a document from a computer. Some printers are all-in-one devices that can also fax, copy, and scan documents. Speakers The speakers are devices that output the sound effects, music, narration, and other audio that your computer generates. You can also use headphones so that only you can hear the computer's output.

Tour the Personal Computer • Modem • The modem is a device that connects your computer to the Internet, either through telephone lines or TV cable. Some modems, called internal modems, reside inside the • computer case. Surge Protector A surge protector is a device that protects your computer from damage by power fluctuations, which are most often caused by lightning.

Tour the Personal Computer • Uninterruptible Power Supply • An uninterruptible power supply (UPS) is a device that provides temporary power to your computer should the electricity fail. This device enables you to shut down your computer properly to avoid losing data Game Controller The game controller is a device that you can use to control the action in a computer game..

Tour the Personal Computer Front of a Personal Computer Case

Tour the Personal Computer • Power Switch • When the computer is off, press the power switch to turn the computer on. When you have finished working with your computer and have shut down all of your programs, press the power switch again to turn off the computer. Activity Light The activity light flashes on and off when your computer is performing a task, such as accessing the main hard disk.

Tour the Personal Computer • Memory Card Readers • The memory card readers are slots into which you can insert various types of memory cards, which are a form of portable storage. Front Access Ports The front access ports are similar to many of the ports on the back of the computer (see the next page), but are often easier to reach. • CD or DVD Drive • A CD drive is a storage device that accepts data CDs (compact discs), which resemble musical CDs. Most new computers have a DVD drive, which accepts data DVDs.

Tour the Personal Computer Personal Computer Ports

Tour the Personal Computer • Keyboard Port • You use the keyboard port to plug in the keyboard. Mouse Port You use the mouse port to plug in the mouse. • Monitor Port • You use the monitor port to plug in the monitor. • USB Ports • You use a Universal Serial Bus (USB) port to plug • in a USB device. Many computer peripherals — • including keyboards, mice, and printers — come in • USB versions.

Tour the Personal Computer • FireWire Port • You use a FireWire port — also known as the IEEE • 1394 port — to plug in a FireWire device. Devices • such as digital video cameras often use FireWire • connections.. Network Port You use the network port to plug in a cable that connects to a network or to a high-speed Internet modem. This is also called an Ethernet port. • Sound Ports • You use the sound ports to plug in sound devices, such as your speakers (the green port on most systems) and microphone (the pink port). Some systems have Line In and Line Out ports to connect the computer to external audio equipment.

Tour the Personal Computer • TV Tuner Ports • You use TV tuner ports to connect a Media Center PC to a TV. The TV tuner ports enable you to send signals to and receive signals from a TV. FM Antenna Port You use an FM antenna port to connect an FM antenna, which enables a Media Center PC to receive FM radio signals. • Modem Port • You use the modem port to connect your computer’s internal modem to your telephone system.

Learn About Computer Hardware Computer hardware consists of the physical components of your computer: the parts, devices, buttons, and ports that you can touch and physically manipulate. Computer hardware comes in two basic varieties: external and internal.

Learn About Computer Hardware External Hardware External hardware, also known as peripherals, refers to hardware that connects to the outside of the computer case. The monitor, keyboard, and mouse are the most common external hardware devices. The printer and speakers are also popular peripherals. You can connect external hardware to your computer through the computer ports described on the previous page.

Learn About Computer Hardware Internal Hardware Internal hardware refers to hardware that resides inside the computer case. This includes the central processing unit (CPU) — the brains of the computer — memory chips that are used for temporary data storage while you work, disk drives that are used for long-term storage, and circuit boards that supply many of the ports on the back of the computer case.

Explore Computer Software Computer software provides the instructions that enable the computer hardware to perform its tasks. Without software, your monitor would not display anything, your speakers would remain silent, and typing on the keyboard keys would have no effect. Computer software comes in two basic categories: application and system.

Explore Computer Software Application Software Application software refers to the programs that you interact with to perform specific computer tasks. For example, a word-processing program enables you to create documents such as memos and letters, a graphics program enables you to draw an image, and an e-mail program enables you to send and receive e-mail messages.

Explore Computer Software System Software System software refers to programs that operate behind the scenes to ensure that your computer system functions properly. This software is most often referred to as the operating system. Some examples of system software include Windows Vista and Mac OS X.

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What Is SlideShare? +How to Get Started Using It Quickly

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