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hardware and operating systems - Coggle Diagram
hardware and operating systems
computer language and function
the system of computers is known as binary system becouse it only has number 0 and 1in it. A bit is the smallest unit of information that we can store into a computer. 8 bits = byte
ASCII ( American Standart Code for Information Interchange) uses 7 bits to store up to 128 different characters
computer functions
output
of data using peripheral devices
storing
data in the storage devices
input
of data using peripheral devices
processing
data in the central processing unit (CPU) using the microprocessor and the memory
computer elements
microprocessor is an integrated circuit made up of millions of tiny transistors working together to process the instructions and data received from the memory
memory and units of storage
RAM
(random acces memory) its the main computer memory
cache memory
is a memory between RAM and the microprocessor and its much faster tan RAM
ROM BIOS
the initial check of the system when you turn on your computer is carried out using instructions stored in a special read-only memory, the ROM BIOS
storage devices
saves the data permanently
magnetic disks
optical discs
solid-state memory (flash)
motherboard and connecting devices
In addition to the microprocessor and memory it also incluides Slots (PCI or PCI express).
IDE or ATA and SATA.
chipset
connecting external devices
software and operating systems
applications
presentations
spreadsheets
database management tools
word processors
drawing programs
programming languages
these progams can be used to create new programs or applications
operating system
manages the system resources making them available to be used by the user and the applications
functions
manages the memory of and storage systems
provides an interface or working environmant
manages the microprocessor
allows communication between applications and peripheral devices
windows operating system
hard disk maintenance
saving power
installing and unistalling programms
system updates
linux operating system
installing and unistalling programs
how to keep your system up to date
a
computer network
is a set of computers connected to each other so that they can share resources and exchange information
LANs (local area networks), wide area networks and metropolitan area networks
elements in a network
adaptor
hub
transmission medium
wireless networks
are known as WLANs use electromagnetic waves to transmit data
shared internet access
using internet connection sharing (ICS) where all communication is through one computer that must be switched on all time
using a router whitch detects data and directs to and from the internet
