11341627
Description
Mind Map by Luca Cameron, updated more than 1 year ago
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Created by Luca Cameron
over 6 years ago
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Computer Science
- DATA REPRESENTATION
- Computer storage -
measured in
multiples of bytes
- Register - small piece
of memory where
values can be held
- Computer
don't work
with hex, they
convert it first
- Data Compressions
reduce size of a file -
1) Lossy 2) Lossless
- Computer storage -
measured in
multiples of bytes
- COMMUNICATION
& INTERNET
TECHNOLOGIES
- Malware
- Software
program made to
damage/disrupt
a computer
- Software
program made to
damage/disrupt
a computer
- Virus
- Software program
made to corrupt a
computer and its
files
- Software program
made to corrupt a
computer and its
files
- Spyware
- Software program
that collects user's
info through
internet connection
- Software program
that collects user's
info through
internet connection
- Firewalls & anti-virus
software minimise
risks
- Cookies
- Tiny piece of data
downloaded by a
computer when it
visits a website.
- Can store details or
personalise adverts
from surfing history -
concerning for user
- Tiny piece of data
downloaded by a
computer when it
visits a website.
- Malware
- COMPUTER ARCHITECTURE,
LANGUAGES & OPERATING
SYSTEMS
- Von Neuman
Architecture
- designed to be
easier to program
- uses buses
and registers
- designed to be
easier to program
- Control Unit (CU)
- 'brain' -
controls data
- 'brain' -
controls data
- Buses
- series of pathways
- data bus -
carries data
- address bus -
carries memory
address
- control bus
- carries
instructions
- data bus -
carries data
- series of pathways
- Compiler
- takes whole program
in high-level language
and translates it to
machine code
- takes whole program
in high-level language
and translates it to
machine code
- Assembly Language
- low-level programming
language that uses
mnemonic codes to
create programs
- low-level programming
language that uses
mnemonic codes to
create programs
- Inerpreter
- translates program
into machine code
line-by-line
- translates program
into machine code
line-by-line
- Von Neuman
Architecture
- LOGIC GATES
- SECURITY
- Malware
- cause data loss
or unauthorised
access to data
- viruses, worms, Trojan
horses & spyware
- cause data loss
or unauthorised
access to data
- Pharming
- uses emails to trick
user into giving away
personal details
- uses emails to trick
user into giving away
personal details
- Phishing
- directs user to fake
websites where they
might give away
personal data
- directs user to fake
websites where they
might give away
personal data
- Denial of
Server (DoS)
- attempt to prevent
access to data
- attempt to prevent
access to data
- Encryption
- disguises contents of
a message using a key
- disguises contents of
a message using a key
- Protocols
- sets of rules that handle
communication
between computers
- sets of rules that handle
communication
between computers
- Malware
- FLOWCHARTS
- DATABASES
- stored in tables
consisting of
records and fields
- Primary Key - field that
holds data that uniquely
identifies a record
- a search
= a query
- SQL = programming
language used to
maintain databases
and to create queries.
- Query by example =
common method of
searching a database
- stored in tables
consisting of
records and fields
Media attachments
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