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Hardware and operating systems (COMPUTER NETWORKS (6.1.Elements in a…
Hardware and operating
systems
1.Computer language and function
1.1. Computer functions
hardware
software or programs
Input of data using peripheral devices
Output of data using peripheral devices
Processing data in the central processing unit (CPU), using the
microprocessor the memory.
Storing of data in the storage devices
2.Computer elements
2.1.Microprocessor
Computer history is very closely Iinked to the development integrated circuits or chips
The clock rate
64 bits at a time
depends on its cache memory and the speed at which it communicates with the RAM.
2.2.Memory and units of storage
Cache Memory
RAM cannot work at the same speed as the microprocessor, so a much faster memory is installed between the RAM and the microprocessor: cache memory.
RAM
It's the computer's maim memory
ROM BIOS
This initial check is carried out using intructions stored in a special read-only: The ROM BIOS
Storage devices
Optical discs
Magnetic disk
Solid-state memory (flash)
2.3.Motherboard and connecting devices (a large board with wires to communicate)
PCI or PCI-Express
IDE or ATA and SATA conectors
Slots
Chipset
input / output ports
Connecting external devices
physically connect
hard disk, DVD drives
external ports
sound card or graphics card
Software and operating systems
Operating system
Fuctions
Manages the memory and storage systems
manages the microprocessor
Provides an interfase or working environment
communication between applications and peripheral
devices
Applications
Word processors
Spreadsheets
Presentations
Database management tools
Drawing programs
Programming languages
WINDOWS OPERATING SYSTEM
Installing and uninstalling programs
Hard disk maintenance
Cleaning the hard disk
Defragmenting the hard disk
Detecting and repairing errors
Saving power
System updates
LINUX OPERATING SYSTEM
Installing and uninstalling programs
How to keep your system up to date
COMPUTER NETWORKS
metropolitan area networks
wide area networks
local area networks or LANs
6.1.Elements in a network
adaptor or network card
hub
switch
transmition medium
6.2. Wireless networks
WLANs
6.3.Shared internet access
router
Internet Connection Sharing (ICS)
7.SHARING RESOURCES IN WINDOWS
Sharing a printer
Sharing files and folders
Sharing resources in Linux
Sharing a computer
Sharing a printer
Sharing folders
