Please enable JavaScript.
Coggle requires JavaScript to display documents.
LO1 Understanding computer hardware - Coggle Diagram
LO1 Understanding computer hardware
1.1 Hardware
Output
Speakers
high quality sound but not very private
Monitor
not very portable
Plotter
High quality printing but it is expensive
Input
microphone
keyboard
mouse
Communications devices
Routers
used to connect two different networkd
Switches
only used on the same LAN unlike routers - only send packets to the correct device on the network
Hubs
used to connect devices but send packets to everywhere on the network
1.2 Components
Processor
Manages all the hardware activities required to receive instructions and data
Motherboard
this is the main printed circuit of a PC. Components such as the CPU are directly connected to it via sockets
Storage
Primary
RAM
ROM
Register
Secondary
Flash drives
cloud storage
SSD
HDD
1.7 units of measure
Binary values
GiB (Gibibyte)
TiB (Tibibyte)
MiB (Mebibyte)
PiB (Pebibyte)
KiB (Kibibyte)
Decimal values
TB(Terabyte)
PB(Petabyte)
GB(gigabyte)
MB(Megabyte)
KB(kilobyte)
1000MB = 1024MiB
1.5 communications hardware
Switch
receives packets
processes them and forwards them onto a specific device
Router
WAN or LAN
Forwards packets between networks
Network Hub
central connection point
equal resource sharing
Hybrid network hub
includes internet access
wireless and wired LANs
1.9 number conversions
1.4 connectivity methods
Wireless
Bluetooth
WI-Fi
uses radio frequencies
laser networks
Fibre
less interference than copper
cables are thinner
expensive
Copper wires
slower than fibre
UTP/STP
cheaper than fibre
1.3 computer systems
Desktop
PC
Mac
Laptops
Tablet
IPad
android
Smartphones
IPhone
Android
Embedded
built in computer
Microwave
cars
fridge
1.6 troubleshooting
Identifying faults
symptoms
date
fault
problem history
error code
Troubleshooting tools
Investigating faults
1.8 number systems
Base 2 (Binary) the units are 0 to 1
Base 16 (Hexadecimal), we can only use a single character. Numbers of 10 and over are changed to letters and so. for base 16, the units are 0-9 and A to F up to 16
Base 10 (Decimal) the units are 0 to 9
