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HARDWARE AND OPERATING SYSTEMS, image, image, image - Coggle Diagram
HARDWARE AND OPERATING SYSTEMS
Computer language and function
When we communicate or memorise a sentence or make calculations, we use a lot of different symbols, sounds and images. Computers only use the numbers 0 and 1.
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
The clock rate sets the pace at which processes are cornpleted. The clock continuously generates electrical impulses
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.
Memory and units of storage
RAM
The computer's main memory is its RAM
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 the cache memory
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.
Motherboard and connecting devices
If you opened up your computer, could you find and identify the memory and the microprocesor.
Software and operating systems
Applications.
Presentations
Powerpoint, Impress
Database management tools
Acces, Base
Drawing programs
Paint. Paint Shop pro,Draw
Spreadsheets
Excel, Calc
Antivirus software. file compressors, web browsers and webmail software, games and so on.
Word processors
Word, Writer
Programming Ianguages
These programs can be used to create
other programs and applications.
Operating system.
Manages the system resources, making them
Windows operating system
Installing and uninstalling programs
If you buy the program from a shop, it will be on one or more CDs or DvDs. However, nowadays, more and more people are buying all sorts of programs on the Internet
Hard disk maintenance
Cleaning the hard disk
Defragmenting the hard disk
Detecting and repairing errors.
Saving power
System updates
Linux operating system
There are thousands of free programs for Linux. In this section we'II learn how to install programs and to keep our operating system updated
