Summary
Summary IT Theory - Intro
- Course
- Institution
Full summary, according to SAGS document, of IEB Information Technology Theory - Introduction section.
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INTROInformation Communications Technology (ICT) -
the
way computers operate and communicate with each other
InputProcessing Output(IPO) model -
generic modell definition a computer
of
inforeseenput
raw, unprocessed facts
Computer -
any device that can receive data as input, process
I
data into information (IPOS
Advantages Disadvantages:
·
Fasta ccess to data ·Electronic failures=> loss of productivity
·Time-critical transactions take place high speed
at Unauthorised data access
Online
banking shopping Scams online fraud
·
Mail services communication
+
Toxic waste (dumping old equipment)
·Less paper Energy consumption
Less ·Hardware becomes outdated
travelling quickly
Can upgrade
Types of computers:
Portable Processing power
Type
·Laptop W ***
·
Desktop - ***
·
Tablet ~ AAA
·Smartphone - *A
Server - powerful, other computers connect
to use its resources
depends ***A
·
Embedded computer -
designed to perform dedicated function depends *(depends)
wear-wearable devices
·Smart wisimple OS ~ *
·Single board computers
-
eg Raspberry PI, Arduino
-
*** (depends)
Typical computer systems
3
Entry level
Mid-level
specific examples to back choice/recommendation
up
must give
High level
Server
Mobile
technologies
Mobile device-
battery powered, portable device we computing functionality that
uses 34/na/591 wireless connection to
with other
interact ICTs and the Internet
Constraints screen size ->
computing
-
power
single window P
->
life
battery
-> &
touchscreen power consumption
Wearable technology
Worn on near skin to detect, analyse, transmitinfo about
u ser
eg smartwatches, smartclothing, head-mounted displays, implantable smartdevices
Modular
design up of
to
made connected parts (motherboard connects)
many
-> smaller devices-
less modular
Advantages
-> to
repairs
->
upgrades
flexibility
->
CYCLE
MACHINE
- Fetch
store Decode
& S
Execute
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