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SOFTWARE AND HARDWARE, components, connecting external devices,…
SOFTWARE AND HARDWARE
Computers
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functions
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processing data in the central processing unit, using the microprocessor and the memory
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elements
memory
RAM, computer main memory
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cache memory, stores the data tha the microprocessor uses most often
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Operating sistems
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examples
windows
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saving power: select the right power options of you laptop and in a period of inactivity tell your computer to go into standby mode automatically
installing and uninstalling programs: we can intall programs using an installation wizard, that during the procces guide us.
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linux
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sharing resources: a printer, a computer and folders
computer network
local area networks, LANs
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elements
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transmission medium, where information travels down (coaxial, RJ45 connector and fibre optic cable)
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software:
applications
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others: antivirus software, file compressor, web browsers, webmail software and games...
programming languages: can be used to create other programs or applications or to develop new operating systems
operating system: manages the system resources making them avaliable for use by the user and the applications.
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components
chipset: integrated circuits that, control the flow of bits to and from the motherboard
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communicates only with the binary sistem (0-1), the smallest is called a bit (b), eight of this together form a byte (B)
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integrated circuit made up of millions of tiny transistors working together to process the instructions and data recieved from the memory (can process 64 bits at a time)
can be PCI, or PCI-Express
we also need to install a driver how allows device to communicate whit operating sistem, that installs drivers for most devices. dependig of the needs we can install other devices.
first thing how appears when you turn on your computer and the last you see, all computers need it, to open a application takes place a lot of process. Provides a working enviroment that makes it easy to acces all the applications, find information and manage files and folders
installing and uninstalling programs: uses two package managers to help users utomatically install applications downloaded from the internet
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all have a logical component (operating system and applications on a network) and a physical component connecting the different computers to each other.
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WLANS, use electromagnetic waves to transmit data, all computers needs a wireless network card, networks that have a combination of wires and wireless devices use wireless acces points, is used to transmit data trough wire or electromagnetic waves
computer networks can connect to internet in two ways. A disadvantage of network sharing is that the computer with all the shared elements must be switched on at all times so that other users can acces to them, to over come it we can use network storage systems and print serves
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