Cat
, 1
Learning Unit
Computers :
microcontroller
Definition -
is an
intergrated circut that provides a specific operation usually in an embedded
system . It is
designed to run a simple basic programe repeatedly
&
Includes processor memory programmable Input/output pins connected to peripherals
-
,
examples-Ovens , fridges & printers
similar to
System On Chip (SOC) but is less
sophisticated microcontroller
-
a
Servers
Definition is central computer that contains collections of data & Provide service & connect to the internet
programs.
-
a a
Includes -
dual
power supplies ,
Redundant Array of Independent Disks (RAID) systems , multiple CPUs & memory
examples
-
print servers ,
file servers & email servers
Server
-
Mobile allows the transmission of data
computing via computer without having physical connection
-
a a
Types of mobile computers :
Laptops/notebook/netbooks -
they use the same basic parts , but are different in size
They battery powered portable & connect
wirelessly to the internet
-
are
,
Include-screen and a
keyboard connected by hinges
large
~
screen phone
Smartphones/Phablets/tablets -
perform both functions of a
phone & computer (convergence device)
Include-touchscreen Internet ,
access & an OS
Wearable computers small tech device capable of data that
any storing & processing can be worn on the
body
-
.
fitness trackers &
examples-Smart watches Head ,
mount
display (google glass) , sports'
tracking systems .
Generic features of Mobile Computers : Limitations :
Life cycle
Portability
Connectivity Power-rely on
battery power
&
availability of
charging points
Interactivity-Share data and collaborate with users Human Interface with device -
small features = hard to use
Individuality -
can
adapt them to own needs
Security Issues -
easy targets
for theft and loss
Cost-data services
roaming expensive
are
Connection speed -
Internet access is slower than direct cable access
Transmission Interferences Weathera interfere with
geography signal reception
-
The computer Motherboard
Definition-piece of plastic that all components and connections that make up the computer are mounted
Includes electrical pulses called
system clock)
clock (creates
quarte crystal regular
-
a
HDMI
VGA A
A
Ethernet
LAN USB 2 0 Port Slk
.
↓
·
headphone output
· mic input
° }@
#
°
\
\= Type
° B3
@S
Sport
, -
Expansion Ports
Definition - connect a device of the outside of the computer, connects to the motherboard by built-in circuitry
(indirect connections expansion ports -
=>
=*
Expansion Slots
Definition - mounted directly onto the motherboard allows a direct connection (internal connection),
computer must be switched off to not cause damage
expansion slots
Sata ports
Definition - Serial Advanced Technology Attachment is a communication bas interface
that connects storage devices to the mother beard
Characteristics - hot swappable SATA ports -
Non-Volatile Memory Express (NVMe)
Definition - communication bus interface that connects SSDs to the Mobo.
The bus allows SSDs to read/write at a higher speed than via M2 chips -
a SATA communication bus
M.2 format
Definition - designed for manufacturers to install a variety of hig speed devices
that require little power, in small spaces.
characteristics - Wifi, bluetooth, radios & SSDs. The M. 2 slot can be used for:
SATA 3. 0, PCIO 3. 0, USB 3. 0& NVMe.
Graphic Cards
Definition - translates the information that the computer is working on into
images & sends them to a display. The more powerful the Graphics Processing Unit (GPU),
the faster images can be displayed, the better visual expirence.
Types - Intergrated - cheaper, ideal for watching or editing videos, 2D gaming PSU-
& general word procession
Dedicated - designed to GPU has its own video memory (GDPR SDRAM)
Power Supply Unit
Definition - PSU convert electricity (Alternating Curren)into low voltage Direct Current (DC)
to power the components of the computer
, 1
Learning Unit
Computers :
microcontroller
Definition -
is an
intergrated circut that provides a specific operation usually in an embedded
system . It is
designed to run a simple basic programe repeatedly
&
Includes processor memory programmable Input/output pins connected to peripherals
-
,
examples-Ovens , fridges & printers
similar to
System On Chip (SOC) but is less
sophisticated microcontroller
-
a
Servers
Definition is central computer that contains collections of data & Provide service & connect to the internet
programs.
-
a a
Includes -
dual
power supplies ,
Redundant Array of Independent Disks (RAID) systems , multiple CPUs & memory
examples
-
print servers ,
file servers & email servers
Server
-
Mobile allows the transmission of data
computing via computer without having physical connection
-
a a
Types of mobile computers :
Laptops/notebook/netbooks -
they use the same basic parts , but are different in size
They battery powered portable & connect
wirelessly to the internet
-
are
,
Include-screen and a
keyboard connected by hinges
large
~
screen phone
Smartphones/Phablets/tablets -
perform both functions of a
phone & computer (convergence device)
Include-touchscreen Internet ,
access & an OS
Wearable computers small tech device capable of data that
any storing & processing can be worn on the
body
-
.
fitness trackers &
examples-Smart watches Head ,
mount
display (google glass) , sports'
tracking systems .
Generic features of Mobile Computers : Limitations :
Life cycle
Portability
Connectivity Power-rely on
battery power
&
availability of
charging points
Interactivity-Share data and collaborate with users Human Interface with device -
small features = hard to use
Individuality -
can
adapt them to own needs
Security Issues -
easy targets
for theft and loss
Cost-data services
roaming expensive
are
Connection speed -
Internet access is slower than direct cable access
Transmission Interferences Weathera interfere with
geography signal reception
-
The computer Motherboard
Definition-piece of plastic that all components and connections that make up the computer are mounted
Includes electrical pulses called
system clock)
clock (creates
quarte crystal regular
-
a
HDMI
VGA A
A
Ethernet
LAN USB 2 0 Port Slk
.
↓
·
headphone output
· mic input
° }@
#
°
\
\= Type
° B3
@S
Sport
, -
Expansion Ports
Definition - connect a device of the outside of the computer, connects to the motherboard by built-in circuitry
(indirect connections expansion ports -
=>
=*
Expansion Slots
Definition - mounted directly onto the motherboard allows a direct connection (internal connection),
computer must be switched off to not cause damage
expansion slots
Sata ports
Definition - Serial Advanced Technology Attachment is a communication bas interface
that connects storage devices to the mother beard
Characteristics - hot swappable SATA ports -
Non-Volatile Memory Express (NVMe)
Definition - communication bus interface that connects SSDs to the Mobo.
The bus allows SSDs to read/write at a higher speed than via M2 chips -
a SATA communication bus
M.2 format
Definition - designed for manufacturers to install a variety of hig speed devices
that require little power, in small spaces.
characteristics - Wifi, bluetooth, radios & SSDs. The M. 2 slot can be used for:
SATA 3. 0, PCIO 3. 0, USB 3. 0& NVMe.
Graphic Cards
Definition - translates the information that the computer is working on into
images & sends them to a display. The more powerful the Graphics Processing Unit (GPU),
the faster images can be displayed, the better visual expirence.
Types - Intergrated - cheaper, ideal for watching or editing videos, 2D gaming PSU-
& general word procession
Dedicated - designed to GPU has its own video memory (GDPR SDRAM)
Power Supply Unit
Definition - PSU convert electricity (Alternating Curren)into low voltage Direct Current (DC)
to power the components of the computer
