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Hdware Input&Output
e-book chapter 5
| Question | Answer |
|---|---|
| What are the types of pointing devices? | mouse; trackball; touchpad; touch screen; pen input; light pen;digitizer; digital pen |
| What does an input device do? | Translates data into a form the computer can process |
| What does an output device do? | Translates information processed by the computer into a form humans can understand |
| What are the types of keyboards? | wired and wireless |
| Which type of keyboard is connected to a CPU via a serial or USB port? | wired |
| What are the two ways to digitize audio? | sound board and MIDI board |
| What is the function of a keyboard? | To convert letters, numbers, and characters into electrical signals |
| How are wired keyboards connected to a CPU? | By a serial or USB port |
| What types of technology are required for a wireless keyboard to function properly? | IR (infrared) technology or Radio Frequency (RF) technology |
| What are the two processes a "dumb terminal" can do? | input and output |
| True or false: dumb terminals process data. | False |
| What type of terminal has a screen, processor, keyboard, and memory? | intelligent |
| What is the main pointing device? | mouse |
| What type of mouse uses laser beams and special chips to encode data for the computer? | optical |
| What type of mouse has a ball inside that touches the desktop surface and rolls? | mechanical |
| What does a mouse control on the screen (monitor)? | mouse pointer |
| When a mouse pointer changes to this, text can be entered. | I-beam |
| What type of pointing device is mounted on top of a stationary device? | trackball |
| What type of pointing device allows users to slide one's finger over a small flat surface? | touchpad |
| Which pointing device is often used in ATMs, information, kiosks, reservation kiosks, voting machines, cellphones, and e-books? | touch screen |
| Which pointing device uses handwriting recognition to translate cursive writing into data? | pen input |
| Which pointing device uses a wired connection to a computer terminal and may require covered hands? | light pen |
| Which pointing device converts drawings and photos to digital data? | digitizer |
| Which pointing device has a tiny camera in its tip to capture writing? | digital pen |
| dpi is an acronymn that stands for what? | dots per inch |
| The term "resolution" refers to an image's what? | sharpness |
| What does a flatbed scanner work like? | photocopier |
| Bar code readers translate symbols into what? | digital code |
| How many types of bar codes are there? | three |
| True or false: 1D bar codes are regular horizontal stripes. | False |
| True or false: 2D bar codes are different sized squares. | False |
| What is the acronym for magnetic-ink character recognition? | MICR |
| OMRs use special scanners to read bubble/pencil marks - true or false? | True |
| OCR – optical character recognition converts editable text format to pictures - true or false? | False |
| What is the name of the peripheral device that is a stand-alone unit that only sends and receives faxed documents? | dedicated fax machine |
| What is the circuit board installed in a computer that sends and receives faxes? | fax modem |
| Two ways to digitize audio are via sound board and MIDI board - true or false? | True |
| What is the name of the device that is a video camera attached to a computer to record live moving images? | webcam |
| What is the name of the device that captures and digitizes one frame at a time? | frame grabber video card |
| What is the name of the device that converts analog to digital signals at rates up to 30 frames per second, resulting in what looks like a motion picture? | full motion video card |
| Most digital cameras can be connected to a PC by USB or via firewall - true or false? | False |
| What type of system converts a person’s speech into digital signals? | speech recognition |
| What type of input device is used to detect speed, movement, weight, pressure, temperature, humidity, wind, current, fog, gas, smoke, light, shapes, images, etc.? | sensor |
| What is the acronym for the tags that have a microchip containing specific code numbers? | RFID |
| What is the science of measuring individual body characteristics? | biometrics |
| What type of data exists electronically is intangible and impermanent? | softcopy |
| What type of data is relatively permanent? | hardcopy |
| A display screen is also known as a what? | monitor |
| What is dp an acronym for? | dot pitch |
| What is the term that refers to the number of bits stored in a dot (pixel)? | color depth |
| What is the term that refers to the number of times per second the pixels are recharged? | refresh rate |
| Flat-panel displays are made of four plates of glass separated by a layer of liquid crystals - true or false? | false |
| What is the acronym for memory in graphics cards? | VRAM |
| A dot-matrix printer is also known as what type of printer? | impact |
| A laser printers and inkjet printer is also known as what type of printer? | nonimpact |
| A low to medium resolution nonimpact printer, that uses coated paper that darkens when heat is applied, is called what type of printer? | thermal |
| What is the name of the specialized output device designed to produce large high-quality, 3-D graphics, often used by architects, engineers, and map-makers? | plotter |
| What type of output produces digitized sounds, including “3-D” sound? | sound |
| What type of output converts digital data into speechlike sounds? | voice |
| What type of output allows photographic images to be played quickly enough to appear as full-motion? | video |
| What is the medical term for the condition caused by pressure on the median nerve in the wrist, due to short repetitive movements? | carpal tunnel |
| What is the medical term for the condition caused by improper use of computer display screens, with symptoms such as eyestrain, headaches, and double vision? | computer vision |
| What type of fields are waves of electrical energy and magnetic energy, often linked to cancer? | electromagnetic |
| What is the term that describes the methodology of designing a workplace with working conditions and equipment that are safer and more efficient? | ergonomics |
Created by:
nicole.minor
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