computers chapter 5
Terms
undefined, object
copy deck
- speaker dependent software
- voice recognition software that makes a profile of your voice
- stylus
- a small metal plastic device that looks like a tiny ink pen but uses pressure instead of ink
- iris recognition system
- reads patterns in the iris of the eye
- input
- any data and instructions entered into the memory of a computer
- light gun
- used to shoot targets and moving objects after you pull the trigger on the weapon
- wireless mouse
- battery powered device that transmit data using wireless technology
- biometric device
- translate a personal characteristic into digital code that is compared with a digital code stored in the computer to identify an individual
- touch screen
- a touch sensitive display device
- program
- a series of instructions that tells computer what to do and how to do it
- magnetic stripe reader
- reads the magnetic stripe on the back of credit cards and other similar cards
- hand geometry system
- measures the shape and size of a hand
- speaker independent software
- which has a built in set of word patterns
- Microsoft Surface
- a 30 inch table top display that allows one or more people to interact using the screen using their hands or finger
- web cam
- a type of digital video camera that enables a home or small business user to capture video, and still images.
- flatbed scanner
- works in a manner similar to a copy machine, except creates a file of the document
- keyguard
- a plate placed over the keyboard that allows users with limited hand mobility to rest their hands and press only one key at a time
- ergonomic keyboard
- a keyboard that has a design that reduces the chance of wrist and hand injuries
- function keys
- special keys programmed to issue commands to a computer
- field camera
- a portable camera that has many lenses and other attachments
- touchpad
- a small, flat, rectangular pointing device that is sensitive to pressure and motions
- resolution
- the number of horizontal and vertical pixels in a display device
- user response
- an instruction a user issues by replying to a question displayed by a program
- optical character recognition
- reads character from ordinary documents
- POS terminal
- records purchases, processes credit or debit cards, and updates inventory
- optical mark recognition
- reads hand drawn marks such as circles or rectangles
- signature verification system
- recognizes the shape of a signature
- voice input
- the process of entering input by speaking into a microphone
- enhanced keyboard
- a keyboard that has 12 or more function keys
- studio camera
- a stationary camera used for professional studio work
- command
- an instruction that causes a program to perform a specific action
- air mouse
- a motion sensing mouse, allows you to control objects by moving the mouse in predetermined directions through air
- input device
- any hardware component that allows users to enter data and instructions
- game pad
- controls the movement and actions of players or objects in video games or computer games
- digital video camera
- records video as digital signals instead of analog signals
- pen input
- users write, draw, and tap on a flat surface to enter input
- pixel per inch
- the number of pixels in a one inch of screen display
- digital camera
- allows users to take pictures and show the photographed images digitally
- voice verification system
- compares live speech with a stored voice pattern
- face recognition system
- a live face image
- mechanical mouse
- a pointing device made with rubber or metal ball on its underside
- toggle key
- a key that switches between two states each time a user presses the key
- pixel
- smallest element in an electronic image
- on-screen keyboard
- a keyboard with larger keys displayed on-screen
- dance pad
- a flat electronic device divided into panels that users press with their feet
- gaming keyboard
- a keyboard designed specifically for users who enjoy playing games on the computer
- identification number
- the number used to access your bank account
- instant messaging
- real time communications service that allows you to exchange messages with online users
- terminal
- consists of a keyboard, a monitor, a video card, memory
- voice recognition
- the computer's capability of distinguishing spoken words
- automated teller machine
- a self service banking machine that connects to a host computer through a network
- game controller
- input device that directs movements and actions of on-screen objects
- keyboard
- an input device thats contains keys users press to enter data and instructions into a computer
- point and shoot camera
- a much more affordable and lightweight and provides acceptable image quality.
- bard code reader
- an optical reader that uses lasers beams to read bar code
- joystick
- a handheld vertical lever mounted on a base
- optical scanner
- a light sensing input device that reads printed text and graphics and translates the results into a form the computer can process
- dumb terminal
- has no processing power and relies on a host computer for processing
- smart terminal
- has a processor and can pefrom some functions independent of the host computer
- predictive text input
- where you press a key, and your phone predicts the word you want
- pointing device
- an input device that allows a user to control a pointer on the screen
- fingerprint reader
- captures curves and indentations of a fingerprint
- ADC (analog to digital converter)
- converts the analog signal to a digital signal
- retinal scanners
- scan patterns of blood vessels in the back of the retina
- video input
- the process of capturing full motion images and storing them on a computer's storage medium such as a hard disk
- charge coupled device
- generates an analog signal that represents the image
- graphics tablet
- a flat, rectangular, electronic, plastic board
- video conference
- a meeting between two or more geographically separated people who use a network or the internet to transmit audio and video data
- wireless keyboard
- a battery power device, that transmits data using wireless technology
- picture messages
- users can send graphics, pictures, and sound files to another phone with a compatible service
- text messaging
- typed messages sent via cell phones
- optical mouse
- uses devices that emit and sense light to detect the mouse's movement
- wheel
- a steering wheel type input device
- motion sensing game controllers
- allow the user to guide-on scree element by moving
- trackball
- a stationary pointing device with a ball on its top or side
- pointing stick
- pressure sensitive pointing device shaped like a eraser
- RFID
- uses radio signals to communicate with an embedded tag
- optical reader
- uses a light source to read characters, marks, and codes and converts them into digital data
- light pen
- a handheld input device that can detect the presence of light
- MICR
- reads text printed with magnetized ink
- digital pen
- pressure sensitive pen