BILGISAARıN ÖZELLIKLERI [8 Sayfa]


EVERYTHING ABOUT COMPUTERS We can study computer in two parts 1 - HARDWARE Hardware means the physical and electronic parts of a computer.Such as monitors and tower cases, now we are going to study computer devices... 1-MainBoard A mainboard is the most important part of a computer as you can understand from it’s name “mainboard”. Other parts should be replaced on the mainboard. 2-HardDisk Drive (H.D.D.) HardDisk stores datas.If you install a program,game or something like that, it will be saved on your hdd.And if your hdd is big enough you can store much more datas,install more games and programs.Of course bigger h.d.d.s are more expensive than small ones.Byte is the measurement of a harddisk and one byte is equal to one data unite which holds characters that must be either 1 or 0. But today we use very large harddisks which take thousands of bytes so we say kilobyte(kb) for 1024 bytes,megabyte(mb) for 1024 kilobytes,Gigabyte(gb) for 1024 megabytes.Today harddisks are about 10 to 75 gb. 3-Cpu Cpu is the brain of a computer and it can make a computer fast if it is a fast one.Computer makes all of it’s calculations by cpu.Computer runs programs from h.d.d. with cpu.Cpu is one of the most important parts of a computer.Megahertz is the measurement of a cpu.Today cpu producers are making cpus around 700mhz to 1700mhz(megaHertz).And 1000 mhz equal 1Ghz.(GigaHertz) 4-Graphic Card A graphic card sends video datas from computer to monitor and you can see pictures and texts on your computer’s monitor. 5-Monitor Monitor takes video datas from your computer by your graphic card and shows you everything.If you run a program your first cpu will call it from h.d.d. then h.d.d. will run it with cpu and send video datas to your video card afterwards your video card sends video datas to your monitor then you see program on the monitor.And all of these things take only a few seconds. 6-Ram If you have to remember an important thing such as a date you should try to keep it in your memory by saying it over and over again in your mind. And your computer does the same. When it needs to keep something in its memory it uses the rams. Computer uses Harddisk if it needs to save, store something but computer uses rams when it have to remember and keep something in its memory for a short time. This is the difference between Harddisks and Rams. Today rams are about 32 to 256mb. 7-Floppy Disk If you have to take datas from a computer and save it into another computer you can use floppy disck. A floppy disk can store 1.44 Megabytes of datas 8-Cd/DvdRoms As the computer techlonogy was developing, at the same time programs, pictures, games was getting very good quality and taking more space too. Then pictures, games, programs and other things was getting bigger than a floppy disk can store. Now a program takes between 50-400 megabytes but a floppy disk can store only 1.44 megabytes.Therefore computer part producers invented a new technology which called Compact Disc (Cd) (About 1980’s) A Cd can store 650 megabytes of datas and it can be used by music sets.Compact Discs are still being used by computer users and today we listen to compact disc digital audio with a great quality.But about 2-3 years ago computer producers invented a new techlonogy and they called it dvd.Dvd has got a perfect quality which is better than Cd.Today film fans are watching their favourite films with great quality which is better than cinemas at their homes. 9-Cd ReWriter/recorder When the floppies get insufficent, compact discs started to being popular. And computer users wanted to make their own compact discs which are contain their family photos,their pictures,games and whatever they want.Then Cd-writers started to be a normal part of a computer.In the old times only professional users used to have a cd-writer but today amateurs have a cd-writer too.But it was not the same with floppies and harddisks because you could not erase and ReWrite a recor [Ödev İndir]