HARDWARE AND OPERATING SYSTEMS
Computer language and function
when we communicate or memorise or sentence or make calculations, we use a lot of different symbols, sound and images. Computers only we use the numbers 0 and 1.
this is know the binary system
the smallest unit of information that we can store on a computer (0,1) is called a bit (b), which is an abbreviation for binary digit.
Computer functions
we use the name hardware for the physical components of the computer system that we use and those we can touch and move, like the mouse and they keyboard
software or programs refer to the data and the instructions we use to manage that data
computers carry out four different functions.
input
output
storing
processing
computer elements
computer history is very closely linked to the development of integrated circuits or chips
the clock rate sets the pace at which processes are completed.
A microprocessor´s power also depends on its cache memory and the speed at which it communicates with the RAM
Memory and units of storage
RAM
cache memory
ROM BIOS
storage devices
Motherboard and connecting devices
The motherboard is like a miniature city. The different components are the buildings, and the bits travel down the streets from block to block. The communication between these components takes place through sets of copper wires called buses
the moderboard also includes the following components
slots
chipset
IDE ( intégrate Device electronics )
various input / output ports
connecting external devices
we can physically connect devices to the computer in different ways
hard disk, DVD drives
sound card or a graphics card
we can also install new devices by using the software provided by the device manufacturer. To do this we need to use one of the following tools
asistente para agregar hardware
informe sobre nuevos dispositivos
administrador de dispositivos
gestor de dispositivos
SOFTWARE AND OPERATING SYSTEMS
operating system
applications
word processors
spreadsheets
presentations
database management tools
drawing programs
programming languages
The operating system
the operating system is the first thing that appears when you turn on your computer and the last thing you see when you're turning it off
Functions of the operating system
manages the microprocessor
manages the memory and storage systems
provides an interface or working environment
allows communication between applications and peripheral devices
windows operating system
installing and uninstalling programs
saving power
hard disk maintenance
cleaning the hard disk
defragmenting the hard disk
detecting and repairing errors
system updates
linux operating system
installing and installing programs
computer networks
a computer network is a set of computers connected to each other so that they can share resources and exchange information
local area networks
metropolitan area networks
wide area networks
elements in a network
adaptor or network card
hub
switch
wireless networks
wireless networks, known as WLANs use electromagnetic card
shared internet acces
internet connection sharing
router
sharing resources in windows
sharing a printer
sharing files and folders
sharing resources in linux
sharing a computer
sharing a printer
sharing folders