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of computers 47 e-Tec Brasil Aula 5 – Parts of computers II Objetivos Conhecer o nome das partes que compõem o computador em inglês. Empregar os verbos no passado de modo a exercitar exemplos prá- ticos do cotidiano do técnico em informática. Elaborar frases simples e coerentes em inglês, utilizando o conte- údo estudado, com exemplos práticos do cotidiano do técnico de informática. 5.1 System unit The system unit is the core of a computer system. Usually it’s a rectangular box placed on or underneath your desk. Inside this box are many electronic components that process information. The most important of these components is the central processing unit (CPU), or microprocessor, which acts as the “brain” of your computer. Another component is random access memory (RAM), which temporarily stores information that the CPU uses while the computer is on. The information stored in RAM is erased when the computer is turned off. Almost every other part of your computer connects to the system unit using cables. The cables plug into specific ports (openings), typically on the back of the system unit. Hardware that is not part of the system unit is sometimes called a peripheral device or device. e-Tec BrasilAula 5 – Parts of computers II 49 Figura 5.1: System unit Fonte: //groovix.com/images/front_open1.jpg Your computer has one or more disk drives – devices that store information on a metal or plastic disk. The disk preserves the information even when your computer is turned off. 5.1.1 CD and DVD drives Nearly all computers today come equipped with a CD or DVD drive, usually located on the front of the system unit. CD drives use lasers to read (retrieve) data from a CD, and many CD drives can also write (record) data onto CDs. If you have a recordable disk drive, you can store copies of your files on blank CDs. You can also use a CD drive to play music CDs on your computer. DVD drives can do everything that CD drives can, plus read DVDs. If you have a DVD drive, you can watch movies on your computer. Many DVD drives can record data onto blank DVDs. 5.1.2 Mouse A mouse is a small device used to point to and select items on your computer screen. Although mice come in many shapes, the typical mouse does look a bit like an actual mouse. It’s small, oblong, and connected to the system unit by a long wire that resembles a tail. Some newer mice are wireless. Figura 5.2: Mouse Fonte: //www.sxc.hu Inglês para Informáticae-Tec Brasil 50 A mouse usually has two buttons: a primary button (usually the left button) and a secondary button. Many mice also have a wheel between the two buttons, which allows you to scroll smoothly through screens of information. When you move the mouse with your hand, a pointer on your screen moves in the same direction (the pointer’s appearance might change depending on where it’s positioned on your screen). When you want to select an item, you point to the item and then click (press and release) the primary button. Pointing and clicking with your mouse is the main way to interact with your computer. 5.1.3 Keyboard Figura 5.3: Teclado Fonte: //www.advantage.co.nz/images/56291.jpg A keyboard is used mainly for typing text into your computer. Like the key- board on a typewriter, it has keys for letters and numbers, but it also has special keys: a) the function keys, found on the top row, perform different functions depending on where they are used; b) the numeric keypad, located on the right side of most keyboards, allows you to enter numbers quickly; c) the navigation keys, such as the arrow keys, allow you to move your po- sition within a document or webpage. You can also use your keyboard to perform many of the same tasks you can perform with a mouse. e-Tec BrasilAula 5 – Parts of computers II 51 Figura 5.4: Teclado flexível Fonte: //heritageproducts.com/home/images/prestige-016.jpg 5.1.4 Monitor A monitor displays information in visual form, using text and graphics. The portion of the monitor that displays the information is called the screen. Like a television screen, a computer screen can show still or moving pictures. There are two basic types of monitors: CRT (cathode ray tube) monitors and LCD (liquid crystal display) monitors. Both types produce sharp images, but LCD monitors have the advantage of being much thinner and lighter. CRT monitors, however, are generally more affordable. Figura 5.5: Monitor CRT Fonte: //www.positivo.pl/upload/wysiwyg/produkty/monitory_crt/lg/LG_F700P_FLATRON_02.jpg Inglês para Informáticae-Tec Brasil 52 Figura 5.6: Monitor LCD Fonte: //www.sxc.hu 5.1.5 Printer A printer transfers data from a computer onto paper. You don’t need a printer to use your computer, but having one allows you to print email, cards, invitations, announcements, and other materials. Many people also like being able to print their own photos at home. The two main types of printers are inkjet printers and laser printers. Inkjet printers are the most popular printers for the home. They can print in black and white or in full color and can produce high-quality photographs when used with special paper. Laser printers are faster and generally better able to handle heavy use. Figura 5.7: Impressora Fonte: //pcwizkid.co.uk/images/speakers.jpg e-Tec BrasilAula 5 – Parts of computers II 53 5.1.6 Speakers Speakers are used to play sound. They may be built into the system unit or connected with cables. Speakers allow you to listen to music and hear sound effects from your computer. Figura 5.8: Caixinhas de som Fonte: //ufile.jrj.com.cn/oblog/articleimage/2008/03/28/SBV5121.jpg 5.1.7 Modem To connect your computer to the internet, you need a modem. A modem is a device that sends and receives computer information over a telephone line or high-speed cable. Modems are sometimes built into the system unit, but higher-speed modems are usually separate components. Figura 5.9: Cable modem Fonte: Acervo da autora Inglês para Informáticae-Tec Brasil 54 Learning activities Mark the correct concept of the following words: a) Memory ( ) It is what you have to pay when you buy something. ( ) Enables a computer to store, at least temporarily, data and program. ( ) When you use the phone to call someone. b) Mass storage device ( ) Something that tell who a person is. ( ) An area in a business office. ( ) Allows a computer to permanently retain large amounts of data. Com- mon mass storage devices include disk drives and tape drives. c) Input device ( ) Usually keyboard and mouse, the input device is the conduit through which data and instructions enter a computer. ( ) The department that sells a business’s products. ( ) A person from another country. d) Output device ( ) A display screen, printer, or other device that lets you see what the com- puter has accomplished. ( ) To look at many things and then take one or two, as the person wishes. ( ) To write your name. e) Central Processing Unit (CPU) ( ) To say that you certainly will or will not do something. ( ) A person who is not smart. ( ) The heart of the computer, this is the component that actually executes instructions. e-Tec BrasilAula 5 – Parts of computers II 55 5.2 Simple past tense – regular verbs With most verbs, the simple past is created simply by adding “ED”. That form belongs for all to the people, not varying in the 3rd person. Simple past is used to indicate an accomplished action and totally finished in the past, corresponding in Portuguese, the perfect preterite as imperfect preterite.