Please enable JavaScript.
Coggle requires JavaScript to display documents.
HARDWARE AND OPERATING SISTEMS (COMPUTER NETWORKS (elemnts in a network,…
HARDWARE AND OPERATING SISTEMS
Binary sistems:
computers only use the numbers (0,1) this is know as the binary sistem
Bit:
is the smallest unit of information
Byte
:form by eight bits
ASCII: i
s a code to each of alphabet letters use only 0 and 1
computer functions :
we use the name hardwere for pphysical compoonents of the computer system
softwere or programs
refer to the data and the instructions we use manage that data
output of data using peripheral devices
storing data in storage devices
input od data using peripheral devices
proccesing data in the central proccesing unit (CPU) using de microprocessor and the memory
computer elements
microprocessor
: is a integrated circuit made up millions of tiny transitors working together to process the instrtuctions of data
the clock rate set the pace at wich are completed . The microprocesor recives 4 billion impulses ecery second
can proccess 64 bits at time
a microprocessor power also dependon its
cache memory
and the speed at wich a comunicates with te
RAM
Cache memory
: the cache memory stores the data taht the microprocessor uses most often
ROM BIOS
: the inital check is carried out using istructions stored in a special read only memory
RAM
: is the computer main memory (random acces memory)
when we run aplications its instructions and adta are copied in this memory. This is because the
hard disk
is very slow
storage devices
: we use data storage to prmantly save this data
optical disks
solid state memory (flash)
magnetic disk
MOTHERBOARD AND CONEECTINGS DEVICES
the
IDE (integrated device electronics)
or
ATA (advanced technology attachment)
and
SATA ( serial ATA ) conectors
conect de hard disk CD drive and DVD drive to the motherboard
The
chipset
is a number of integrated circuits designed to perform related functions they control the flow of bits
Slots that that can be used to expand or add new components such as a modern ,sound card, network card and so on . these slots can be
PCI ( peripherl component intereconect )
or
PCI-Express
SOFTWARE AND OPERATING SYSTEMS
Operating systems
: manages the system resources making them avalible for use by the user and the aplicattion
Spreadsheets
Presentation
Word precessor
Database management tools
Draw
functions of operating systems
manages the memory and storage systems
provides an interface or working enviroment
manages the microprecessor
comunication between apliccattions and peripheral devices
Windows
hard disk maintenace
Cle amng the hard disk
Defragmentmg the hard disk
Detecting and reparing errors
systems updeates
installing and unistalling programs
saving power
COMPUTER NETWORKS
metropolitan area network
wade networks
local area network
elemnts in a network
the hub distributes all the information
transmision medio
adaptor in a network card
wireless networks