Module 1.7 Flashcards
what is a pointing device
used to move the pointer or cursor on the screen
enabling you to see what you’re pointing at
Name 5 pointing devices
- touchpad
- pointing stick
- pen input device
- trackball
- touch screen
name 4 gestures used for touchscreens
- pinch
- zoom
- swipe
- touch and drag
name all the 4 sensors of your devices and describe them
- accelerometer : detects movement allows device to change orientation
- temp sensor: switch off until cools down
- light sensor: adjust brightness of screen to surroundings - switch off screen when hold to ear
- electronic compass: shows you direction in which device is pointing
name 3 gaming devices
- joystick
- controller
- steering wheel
what is a scanner
input device that scans images into a computer
what is a flatbed scanner
slightly larger than A4 size and can scan photos, magazines and printed documents
what’s a sheet-fed scanner
only allows a sheet of paper to be scanned and can’t scan books
what is a barcode scanner
input device that shines a laser onto pattern of black lines and recognize the numerical code associated with that item
Name benefits of a barcode system
- access additional info
- more accurate & quicker than swiping
- update records for stock
- goods don’t have to be relabeled when price changes
what’s biometric scanners
measures something biologically unique to you
- fingerprint or iris
*touch ID
how do bank cards store info?
magnetic strip places on the card that stores data
what is RFID
Radio Frequency Identification
uses small radio devices to store and transmit data in a relatively short range
Give definition and explanation for the following:
- OMR
- MICR
- OCR
- Optical Mark Recognition: scan and mark tests
- Magnetic Ink Character Recognition: magnetic ink on cheques
- Optical Character Recognition: scan and then edit text
Name 3 ways to get video into computer
- record it directly from webcam
- transfer from digital camera
- transfer from cell phone
name 4 things audio can be used for
- recording and mixing music
- recording narration for presentations and videos
- inputting text
- giving computer commands
define ripping
copy digital content from CDs and DVDs
infringement of copyright
Name 2 voice recognition softwares
Dragon Home
Professional
voice recognition helps with physically disabled people
🤌🏼
what is sound used for
- give user feedback when interacting with the computer
- easier for disabled people
- make games more realistic
- turn computers into real entertainment devices
Give 4 other names for a projector
- LCD projector
- DLP projector
- RGB projector
- LES projector
what is a projector
output device connects to computer and projects whatever is displayed on the monitor onto a screen or wall
Name 4 functions of a printer
- pinter
- scanner
- fax
- photocopier
name 2 types of memory cards
SD
Memory stick
how do you take care of a pc?
- keep things that create magnetic field away
- keep dust free
- well ventilated area
- no liquids
- no food
TLC of optical storage media
- discs are sensitive to scratches
- clean discs carefully
- hold discs by edges or center
what is a motherboard?
large rectangular board found inside computer case
contains circuitry with slots and connectors for CPU, RAM, storage devices and peripherals
allows all parts of the computer to communicate with each other
why is there a fan in the motherboard?
By the CPU cause the CPU needs a lot of cooling
what is a CPU
central processing unit
performs all the processing of data and carrying out of instructions
speed is gigahertz
Name 6 characteristics about RAM
- where CPU keeps data/instructions
- Volatile
- supplied in modules
- fast
- expensive
- more RAM you have better the computer will perform - load more data & programs
what is ROM
Read Only Memory
special chip on motherboard that holds instructions needed to start the computer and load the operating system
NON VOLATILE
