CAT Theory Summary with terms and acronyms IEB Gr 10-12

CAT Theory IEB
Gr 10-12
Rachel Jones

,CAT Theory Gr 10-12


Contents
Acronyms ........................................................................................................................................... 2
Terms .................................................................................................................................................. 4
File extensions ................................................................................................................................... 7
Computers in our everyday lives ................................................................................................... 8
Why do we use computers? ............................................................................................................. 8
Types of computers .......................................................................................................................... 9
Convergence ..................................................................................................................................... 9
Categories of users ......................................................................................................................... 10
Internet connections and services ................................................................................................ 11
Internet service providers (ISP)...................................................................................................... 12
Criteria for choosing internet connections (broadband) ............................................................... 12
Webpages ....................................................................................................................................... 13
E-communications .......................................................................................................................... 14
Internet services (E-communications) ........................................................................................... 15
Hardware .......................................................................................................................................... 17
Input Devices: ................................................................................................................................. 18
Output Devices: .............................................................................................................................. 20
Printers: .......................................................................................................................................... 20
Storage Devices: ............................................................................................................................. 21
Identifying other hardware devices: .............................................................................................. 22
The motherboard: .......................................................................................................................... 24
Primary VS Secondary Memory ..................................................................................................... 26
Cache Memory ............................................................................................................................... 26
Virtual Memory .............................................................................................................................. 26
Networks .......................................................................................................................................... 27
Network Architecture (Topology) .................................................................................................. 28
Types of cables ............................................................................................................................... 30
Hardware devices that are needed to set up a network ............................................................... 30
Software ............................................................................................................................................ 31
Types of Software .......................................................................................................................... 31
Dangers of computer crime ........................................................................................................... 32
Types of social engineering: ........................................................................................................... 32
Pros and cons of technology.......................................................................................................... 36




1|P age
Rachel Jones

, CAT Theory Gr 10-12



Acronyms
Acronym What the acronym stands for
ADSL Asymmetric digital subscriber line
ALU Arithmetic and logic unit
AR Augmented reality
ATM Automated teller machine
AUP Acceptable use policy
BCC Blind carbon copy
BIOS Basic input output system
CMOS Complementary metal oxide semiconductor
CPU central processing unit
CRT Cathode ray tube
CTS Carpal tunnel syndrome
DIMM Dual inline memory modules
DNS Domain name system
DOS Denial of service
DPI Dots per inch
DRAM Dynamic random access memory
DVD Digital versatile disk
EFT Electronic fund transfer
EMI Electro- magnetic interference
EULA End user license agreement
FTP File transfer protocol
GIGO Garbage in garbage out
GPS Global positioning system
GPU Graphic processing unit
GUI Graphic user interface
HDD Hard disk drive
HDMI High definition multimedia interface
HTML Hyper text mark-up language
HTTP Hyper text transfer protocol
HTTPS Hyper text transfer protocol secure
ICT Information and communications technology
IP Internet protocol
ISP Internet service provider
LCD Liquid crystal display
LTE Long term evolution
MICR Magnetic Ink Character Recognition
NIC Network interface card
OCR Optical character recognition
OSD On screen display
OSS Open source software
PCI Peripheral component interconnect

2|P age
Rachel Jones