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

image

image

image

image

image

image