1、Computer Hardware,Yanci Zhang,Whats Inside Computer,Case Motherboard CPU RAM Hard disk Graphics card Power supply I/O Devices,Case,Motherboard,Ties everything in your computer together Computer hardware(memory, PCI-E card) connect to the motherboard through slots,CPU,Central Processing Unit,RAM,Rand

2、om Access Memory A form of computer data storage Access stored data in any order and any piece of data can be returned in a constant time,Hard Disk,Non-volatile storage device for digital data Disk size KB MB GB TB,kilobyte,megabyte,gigabyte,terabyte,Inside Hard Disk,One or more rotating rigid platt

3、ers on a motor-driven spindle within a metal case Data is encoded magnetically by read/write heads that float on a cushion of air above the platters.,Disk Interface,IDE/ATA : Integrated Drive Electronics (Advanced Technology Attachment) SATA : Serial ATA SCSI : Small Computer System Interface SAS :

4、Serial Attached SCSI,Graphics Card 1/2,Generate and output images to display House a processor (GPU) and RAM Can be integrated on motherboard,3D rendering Video decoding General computing : fusion of CPU and GPU,Graphics Card 2/2,Power Supply,Convert the AC input to lower DC voltages,Input Devices,K

5、eyboards Mouse Game Controller Scanner Graphics Tablets,Output Devices,Monitors Printers Laserjet Inkjet Speakers,Computer Tour 1/14,If youre the kind of person who has always wondered whats inside a computer, then this is the video for you. What were gonna do here is to open the machine and look at

6、 the seven major components that youll find inside.,Computer Tour 2/14,The mother board is the heart of the computer. Every part either sits on the mother board or connects to in it some way. In this machine, this big red rectangle is the motherboard.,Computer Tour 3/14,The CPU is the Central Proces

7、s Unit. Its the brain of the computer. It runs the software and processes the data that youre working on. In this machine like most CPU seat center is a big heat sink fan that you see here.,Computer Tour 4/14,The people who design CPU chips often leave behind pictures or things on the surface of the

8、 chip. Theyre incredibly tiny, you have to use a microscope to see them, but like the Easter eggs in the video game theyre there to amuse and surprise other people.,Computer Tour 5/14,The RAM is the Radom Access Memory. And it sits right on the motherboard. It holds the data and software that youre

9、currently running. At most motherboard youll find one, two or four banks of RAM.,Computer Tour 6/14,Adding RAM to your machine is a really simple way to speed it up. This is what a stick of memory looks like. To add it to your machine, just find an open slot on your motherboard and slide it right in

10、.,Computer Tour 7/14,This is the video card. It connects to the motherboard with a special video card slot. The video card creates the images that appear on your monitor. Most motherboard accepts either an AGP or a PCI express video card.,Computer Tour 8/14,Serious gamers will update their video car

11、ds every 3 to 6 months to get the best performance. The latest thing is to have 2 or even 4 video cards in a single machine.,Computer Tour 9/14,The power supply usually sits the top of the case. And surprisingly, it supplies the power the computer needs. All these different wires that you see in the

12、 case are covering from the power supply.,Computer Tour 10/14,A high end machine can burn up to 8 hundred watts. If you let that machine on 24 hours a day for a year, it might cost 700 dollars to run it, thats as much some people spend on a whole machine.,Computer Tour 11/14,This is the hard disk. I

13、t holds your information even if the power is off. When you turn the power on, your software and data are loaded from the hard disk into the RAM.,Computer Tour 12/14,If youve got all the machine that youre ready to donate or recycle. It contains a lot of personal information. Deleting the files is n

14、ot enough, because some of the software can undelete those files. If you want to truly erase your data, youve got to destroy the drive.,Computer Tour 13/14,This is the optical drive. It sits in the front bay of your computer. And it uses the laser to read and write the CDs and DVDs. CDs and DVDs can take an inc