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CAT Term 1 2021 > Module 1.7 > Flashcards

Module 1.7 Flashcards

1
Q

what is a pointing device

A

used to move the pointer or cursor on the screen

enabling you to see what you’re pointing at

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2
Q

Name 5 pointing devices

A
  • touchpad
  • pointing stick
  • pen input device
  • trackball
  • touch screen
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3
Q

name 4 gestures used for touchscreens

A
  • pinch
  • zoom
  • swipe
  • touch and drag
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4
Q

name all the 4 sensors of your devices and describe them

A
  • 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
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5
Q

name 3 gaming devices

A
  • joystick
  • controller
  • steering wheel
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6
Q

what is a scanner

A

input device that scans images into a computer

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7
Q

what is a flatbed scanner

A

slightly larger than A4 size and can scan photos, magazines and printed documents

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8
Q

what’s a sheet-fed scanner

A

only allows a sheet of paper to be scanned and can’t scan books

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9
Q

what is a barcode scanner

A

input device that shines a laser onto pattern of black lines and recognize the numerical code associated with that item

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10
Q

Name benefits of a barcode system

A
  • access additional info
  • more accurate & quicker than swiping
  • update records for stock
  • goods don’t have to be relabeled when price changes
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11
Q

what’s biometric scanners

A

measures something biologically unique to you
- fingerprint or iris

*touch ID

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12
Q

how do bank cards store info?

A

magnetic strip places on the card that stores data

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13
Q

what is RFID

A

Radio Frequency Identification

uses small radio devices to store and transmit data in a relatively short range

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14
Q

Give definition and explanation for the following:

  1. OMR
  2. MICR
  3. OCR
A
  1. Optical Mark Recognition: scan and mark tests
  2. Magnetic Ink Character Recognition: magnetic ink on cheques
  3. Optical Character Recognition: scan and then edit text
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15
Q

Name 3 ways to get video into computer

A
  • record it directly from webcam
  • transfer from digital camera
  • transfer from cell phone
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16
Q

name 4 things audio can be used for

A
  • recording and mixing music
  • recording narration for presentations and videos
  • inputting text
  • giving computer commands
17
Q

define ripping

A

copy digital content from CDs and DVDs

infringement of copyright

18
Q

Name 2 voice recognition softwares

A

Dragon Home

Professional

19
Q

voice recognition helps with physically disabled people

A

🤌🏼

20
Q

what is sound used for

A
  • give user feedback when interacting with the computer
  • easier for disabled people
  • make games more realistic
  • turn computers into real entertainment devices
21
Q

Give 4 other names for a projector

A
  • LCD projector
  • DLP projector
  • RGB projector
  • LES projector
22
Q

what is a projector

A

output device connects to computer and projects whatever is displayed on the monitor onto a screen or wall

23
Q

Name 4 functions of a printer

A
  • pinter
  • scanner
  • fax
  • photocopier
24
Q

name 2 types of memory cards

A

SD

Memory stick

25
Q

how do you take care of a pc?

A
  • keep things that create magnetic field away
  • keep dust free
  • well ventilated area
  • no liquids
  • no food
26
Q

TLC of optical storage media

A
  • discs are sensitive to scratches
  • clean discs carefully
  • hold discs by edges or center
27
Q

what is a motherboard?

A

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

28
Q

why is there a fan in the motherboard?

A

By the CPU cause the CPU needs a lot of cooling

29
Q

what is a CPU

A

central processing unit

performs all the processing of data and carrying out of instructions

speed is gigahertz

30
Q

Name 6 characteristics about RAM

A
  • where CPU keeps data/instructions
  • Volatile
  • supplied in modules
  • fast
  • expensive
  • more RAM you have better the computer will perform - load more data & programs
31
Q

what is ROM

A

Read Only Memory

special chip on motherboard that holds instructions needed to start the computer and load the operating system

NON VOLATILE

CAT Term 1 2021 (6 decks)

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