SOFTWARE AND HARDWARE
Computer language and function
this system ys known as binary system and it only uses 0 and 1
the smallest unit of information that we can store on a computer (0 or 1)
is called a bit (b), which is an abreviation for binary digit.
eight bits together form a byte (B)
ASCII
we give a code for each letterr of the alphabet. The code consists in 1 and 0
COMPUTER FUNCTIONS
We use the name hardware for the physical components of the computer that we can touch
Software is the data and intructions to manage data
there are: Input of data, output of data, storing data and processibg data
COMPUTER ELEMENTS
Microprocesssor
Memory and units of storage
The microprocessor is an integrated circuit made up of millions of tiny transistor that process the data
Cache memory
ROM BIOS
RAM
When we run an app, its data is copied to this memory
Faster memory installed between RAM and microprocessor
When you turn the computer on, it checks the system
Storage devices
The RAM stores data temporally
Motherboard and conecting devices
Motherboard
All the other components in the computer are connected to it
it's main components are
Slots
IDE
chipset
Power supply unit
Connecting external devices
expansion slots
hard disc, DVDs
Software and operating systems
operating system
manages system resources
applications
word processor
spreadsheet
presentation
database management tools
drawing programs
antivirus
is the first thing that appears when you turn on
your on your computer and the last thing you see when you turn it off
Functions of the operating system
Kibibyte----KiB----1024 bytes
Mebibyte----MiB----1024 KiB
Gibibyte----GiB----1024 MiB
Tebibyte----TiB----1024 GiB
Gigabyte----GB----1000 MB
Megabyte----MB----1000 kB
Kilobyte----kB----1000 bytes
Terabyte----TB----1000GB
manages the microprocessor
Manages the memory and storage systems
Provides an interface or workmg environment
Allows i communication between apps and peripheral
devices
WINDOWS OPERATING SYSTEM
Installing and uninstalling programs
an installation wizard guides us through the process
Hard disk maintenance
Defragmenting the hard disk
Detecting and reparing errors
Cleaning the hard disk
Saving power
your computer can go standby mode if its innactive in a period of time
System updates
operating systems are constantly updating
LINUX OPERATING SYSTEMS
Installing and uninstalling programs
Linux uses 2 package managers to help faster to install downloaded apps
How to keep your system up to date
open Gestor de actualizaciones
click on comprobar
COMPUTER NETWORK
is a set of computers that are connected to each others
they can be divided into
wide area networks
metropolitan area networks
LANs
ELEMENTS IN A NETWORK
all of them have a logical and a physical component connecting to each others
adaptor
hub
switch
sends information
distributes info
sends data
transmission medium
cable with connector
WIRELESS NETWORKS
They use electromagnetic waves to transmit data
networks with a combination use WAP
WAP is a Wireless Acces Point