CC1 FIRST FINAL TERM QUIZ REVIEWER

Keyboards

An input device used to enter characters at the location marked by the insertion point or cursor

Pointing devices

are used to Select and manipulate objects, Input data, Issue commands to the computer

Mouse

Common pointing device that the user slides along a flat surface to move a pointer around the screen and clicks its buttons to make selections

Perceptual Computing

Users control devices with 3D gestures, voice commands, and facial expressions, Noncontact system, Allows for full body input and input from a slight distance away

Stylus

Pen -like device used to draw or write electronically on the screen, Also called digital pen, electronic pen, tablet pen

Pen input

used with mobile devices and tablet computers, Used to input handwritten text and sketches and to manipulate objects

Digital Writing Systems

Pen-based systems that capture handwritten input as it is being written, Requires special paper with a grid of dots, Handwritten input can be transferred to computer

Graphics Tablets

Pen tablets or digitizing devices, Flat, touch sensitive tablet typically connected to computer using a USB port

Signature Capture Devices

Found at check out counters to record customer signatures

Touch Screens

Display devices that are touched with the finger to select commands or otherwise provide input to the computer

Multi -touch

Can recognize input from more than one finger at a time

Table PC

Large screen computer either built into a table or designed to be used on a table

Trackballs

An input device that looks like an upside-down mouse with the ball on top

Optical or laser mice

track with light

Touch mice

support two - dimensional gestures

Augmented Reality

Computer generated images are overlaid on top of real- time images, Displays appropriate information related to images captured by the smartphone

Source documents

Already exists in physical form (photographs, checks, or product label)

Source data automation

Captures data directly from a source document, Saves time, Increases accuracy, Utilizes scanning or reading devices

Scanners (Optical Scanners)

Input devices that read printed text and graphics and transfers them to a computer in digital form, Data is typically input as a single image, Can scan photos, documents, images

Scanning Quality and Resolution

Quality of scanned images indicated by optical resolution, Higher resolution means better quality but larger file size

Barcode Readers

Input devices that read barcodes

Barcodes

Machine-readable codes that represent data as a set of bars

Radio Frequency Identification (RFID) Readers

Technology used to store and transmit data located in RFID tags

RFID tags

contain tiny chips and radio antennas, Can be attached to objects, Read by RFID readers, Tags only need to be within range of the reader, rather than in the line of sight

Handheld, portal, and stationary

Types of RFID Readers

Optical Mark Readers (OMRs)

Input data from special forms to score or tally exams, questionnaires, ballots

Optical Character Recognition (OCR) Devices

is the ability of a computer to recognize scanned text characters and convert them to electronic form as text, not images, ________ software is used to identify each character and convert it to editable text, Used to process turnaround documents like monthly

Magnetic Ink Character Recognition (MICR) Readers

Also called check scanners, Used primarily for banking, Read the special magnetic characters printed at the bottom of checks, Used to facilitate remote deposits and electronic check processing

Biometric Readers

Used to input biometric data such as an individual’s fingerprint or voice, Can be stand-alone or built into another piece of hardware, Most often used for access control, to authorize electronic payments, log on to secure Web sites

Mobile Deposits

Transmit check information via smartphone app and camera, App optimizes the check front and back images and transmits images and deposit data to your bank

Digital Cameras

Take pictures and records them as digital images, Can either be still cameras or video cameras

Digital Still Cameras

Primary appeal is that images are immediately available, Camera quality is measured in megapixels, Typically use flash memory for storage

Digital Video Cameras

Digital camcorders, PC video cameras, Built-in or stand alone, Store images on digital media

Audio Input

The process of entering audio data into the computer

Voice Input

Inputting spoken words and converting them to digital form via microphone or headset, Can be used for podcasts and with VoIP (Voice over IP) systems

Music Input Systems

Existing music can be input using CDs or a Web download

Display Device

Presents output visually on some type of screen

Monitor

Display device for a desktop computer

Display Screen

Screen built into a variety of devices

Cathode ray tube (CRT) displays

large, bulky, and heavy

Flat -panel displays

take up less desk space; use less power

Size and Aspect Ratio

Device size measured diagonally from corner to corner

Screen Resolution

Number of pixels used on a display determines resolution

Video cards

determine the graphic capabilities of a computer

VGA, DVI, and HDMI

the three most common interfaces to connect monitors to a computer

Wired display

are physically connected to the system via a cable

Wireless displays

connect using a wireless network connection (Wi -Fi, Bluetooth)

Wearable Displays

Project images from a mobile device to a display screen built into glasses

Liquid Crystal Displays (LCDs)

Use charged liquid crystals between sheets of glass or plastic, Requires backlighting

Light Emitting Diode (LED) Displays

Used in alarm clocks and Christmas lights, Currently used to backlight LCD panels

Organic Light Emitting Diode (OLED) Displays

Use layers of organic material, Emit visible light when current is applied, Are thinner than LCDs, Have a wider viewing angle, Incorporated into many digital cameras, mobile phones, and portable digital media players

FOLED (Flexible OLED)

OLED displays built on flexible surfaces such as plastic or metallic foil

TOLED (Transparent OLED)

Displays are transparent, Emit light toward top and bottom of display surface

PHOLED (Phosphorescent OLED)

Process that results in much more conversion of electrical energy into light instead of heat

Interferometric Modulator (IMOD) Displays

Essentially a complex mirror that uses external light to display images, Designed initially for mobile phones and portable devices, Images are bright and clear, even in sunlight

Plasma Displays

Use layers of gas between two plates of glass, Being replaced by LCDs

E-Paper

Used for e-readers and other devices, Only uses power to change images, not maintain an image

Impact Printers (Dot Matrix)

Print mechanism strikes an inked ribbon to transfer ink to the paper, Used to produce multipart forms

Pico projectors

are pocketsize and connect mobile and portable devices

Non -Impact Printers (Ink - Jet/Laser)

Produce higher quality images, Much quieter than impact printers

magenta, cyan, yellow, and black ink

Colors printers uses what color of inks?

300 dpi

for general purpose printing

1,200 dpi

for photographs

2,400 dpi

for professional applications

Laser Printers

Use toner powder and technology similar to that of a photocopier to produce images on paper, Can be black and white or color, The standard for business documents, Use toner cartridges

Ink-Jet Printers

Sprays droplets of ink to produce images on paper, Use ink cartridges, Usually print in color, Often the choice for home use