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:star: Harware and operating systems :star: (Computer networks (Elements…
:star: Harware and operating systems :star:
Computer language and function
Computers use the numbers 0 and 1 which is called binary system
The smallest unit that we can store on a computer is called bit which is an abbreviaton of a digital digit. 8 bits together form a byte
ASCII (the American Standard Code for lnformation Interchange) uses 7 bits to store up to 128 different characters
Computer functions
Output of data using peripherial devices
Storing data in the storage devices
Input of data using pheripheral devices
Proccesing data in the central proccesing unit (CPU), using the microprocessor and the memory
Computer elements
Microprocessor
Today´s microprocessors can process 64 bits at a time
A microprocessor´s power also depends on its cache memory and the speed at which it communicates with the RAM
The clock rate sets the pace at which processes are completed. The clock continuously generates electrical impulses.
Memory and units of storage
Cache Memory
The cache memory stores the data that the microprocessor uses most often
ROM BIOS
When you turn on your computer, it automatically checks the system. This initial check is carried out using instructions stored in a special read only memory: the ROM BIOS
RAM
The computer´s main memory is its RAM (random access memory)
Storage devices
The RAM stores data temporarily. When you turn off the computer, this data disappears.
Motherboard and connecting devices
Parts
The IDE
The chipset
Slots
Input/output ports
Connecting external devices
Hard discs DVD drives
USB ports
Sound card or graphics card
Software and operating systems
Applications
Antivirus software
Drawing programmes
Database managment tools
Presentations
Spreadsheets
Word processors
Programming languages
Operating systems
It´s the first thing you see when you turn on your computer an the last one when you turn it off
Manages the memory and the storage systems
Provides an interface or working environment
Manages the microprocessor
Allows communication between applications and peripherial devices
Functions of the operating system
Manages the memory and storage systems
Provides an interface or working environment
Manages the microprocessor
Allows communication between applications and peripherial devices
Windows operating system
Hard disk maintenance
Defragmenting the hard disk
Detecting and repairing errors
Cleaning the hard disk
Saving power
Installing and unstalling programmes
System updates
Linux operating systems
Installing and unistalling programmes
How to keep your system up to date
Computer networks
Wireless networks
Shared internet access
Internet Conection Sharing
Using a router
Elements in a network
The hub
Transmission
Adaptor or Network card
Metropolitan area network
Wide area networks
Local area network
Sharing resources in Windows
Sharing a printer
Sharing files and folders
Sharing a folder
Accessing a shared folder
Sharing resources in Linux
Sharing a printer
Sharing folders
Sharing a computer
