Скачать презентацию Bits and Bytes Wee San Lee weesan cs ucr Скачать презентацию Bits and Bytes Wee San Lee weesan cs ucr

19137ca83b9a40482ba2a6dbccac2f2d.ppt

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Bits and Bytes Wee. San Lee weesan@cs. ucr. edu Bits and Bytes Wee. San Lee [email protected] ucr. edu

Roadmap n n n Basic Terminology Computer Components Operating Systems Conclusion References Roadmap n n n Basic Terminology Computer Components Operating Systems Conclusion References

Basic Terminology n Bits q q n The smallest unit of information in a Basic Terminology n Bits q q n The smallest unit of information in a computer 0 or 1 Bytes q q 8 bits Eg. 0100 10102 = 4 A 16 = 74 = ‘J’ 8 4 2 1 0100 1010 A = 4 A 4

Basic Terminology (cont) n KB q q n Mega Bytes Eg. 1 MB = Basic Terminology (cont) n KB q q n Mega Bytes Eg. 1 MB = 1, 048, 576 ≈ 1, 000 Bytes GB q q n Kilo Bytes Eg. 1 KB = 1, 024 Bytes ≈ 1, 000 Bytes Giga Bytes Eg. 1 GB = 1, 073, 741, 824 ≈ 1, 000, 000 Bytes TB q q Tera Bytes Eg. 1 TB = 1000 GB

Computer Floppy Drive Optical Drive Hard Drive http: //en. wikipedia. org/wiki/Image: Stripped-computer-case. JPG http: Computer Floppy Drive Optical Drive Hard Drive http: //en. wikipedia. org/wiki/Image: Stripped-computer-case. JPG http: //en. wikipedia. org/wiki/Power_supply_unit

Computer (cont) n PSU (Power Supply Unit) q n Power up the computer HDD Computer (cont) n PSU (Power Supply Unit) q n Power up the computer HDD (Hard Disk Drive) q q q A mass-storage for the computer Size: 3. 5” for desktop, 2. 5” for laptop Speed: 5400/7200 RPM Type: ATA 100/133 vs. SATA Capacity: 8/17/32/60/80/120/160/250/500 GB = ½TB

Computer (cont) n FDD (Floppy Disk Drive) n Format: 5¼ ” or 3. 5” Computer (cont) n FDD (Floppy Disk Drive) n Format: 5¼ ” or 3. 5” q Capacity: 1. 2 M or 1. 4 M Optical Drive q q q CDROM/CD-RW for CD DVDROM/DVD-RW for DVD

Computer (cont) n Motherboard (MOBO) q Primary circuit board of the computer q Form Computer (cont) n Motherboard (MOBO) q Primary circuit board of the computer q Form factor: ATX/Micro. ATX/SFF q Newest form factor: Hump. ATX? n http: //www. cs. ucr. edu/~weesan/hacks/hump_atx. html

Computer (cont) Floppy Disk Controller Power Connector CPU socket Back plane I/O IDE Controller Computer (cont) Floppy Disk Controller Power Connector CPU socket Back plane I/O IDE Controller SATA Controller

Computer (cont) n CPU (Central Processing Unit or processor) q q The brain of Computer (cont) n CPU (Central Processing Unit or processor) q q The brain of the computer Performs computation, data processing, etc http: //www. intel. com/products/i/products/pentium 4. jpg http: //www. global-b 2 b-network. com/direct/dbimage/50086366/CPU_Cooler. jpg

Computer (cont) q Brand n Intel q n AMD q q K 6/2, K Computer (cont) q Brand n Intel q n AMD q q K 6/2, K 7, Sempron, Athlon, Opteron Clock speed n n q 286/386/486, Pentium III/4, Xeon, Dual-Core, Core 2 Solo/Duo 66/100/200/300/450/600/800 MHz 1. 2/1. 4/1. 6/1. 83/2. 0/3. 2 GHz Overclocking n Forces a CPU to run faster than it was designed for

Computer (cont) n RAM (Random Access Memory) q q q A place that a Computer (cont) n RAM (Random Access Memory) q q q A place that a program and data are kept so that they are accessible by the CPU Types: SDRAM/DDR 2/SO-DIMM Name n n q DDR-200/266/333/400 DDR 2 -400/533/667/800 Capacity n n 32/64/128/256/512 MB 1/2/4 GB

Computer (cont) n Expansion slots q q q A place that expansion cards can Computer (cont) n Expansion slots q q q A place that expansion cards can be inserted to increase the functionality of the computer Eg. Modem card, audio card, video card, Ethernet card, etc. Type n n ISA PCI AGP PCI Express

Computer (cont) n Back panel I/O Mouse Keyboard Printer Port Serial Port Firewire Port Computer (cont) n Back panel I/O Mouse Keyboard Printer Port Serial Port Firewire Port VGA port Ethernet Port USB port Audio ports

Operating Systems n n The software between the HW and apps Eg. q q Operating Systems n n The software between the HW and apps Eg. q q q Windows 95/98/2000/NT/ME/XP/Vista Mac OS X (10. 3/10. 4) Linux Distribution: Slackware/Redhat/Suse/Debian/Ubuntu/Cent. OS

Conclusion n n Bits & Bytes Computer q q q PSU MOBO CPU RAM Conclusion n n Bits & Bytes Computer q q q PSU MOBO CPU RAM HDD/FDD/Optical Drive

References n n Internet Effectively (Ch 1 -2) http: //computer. howstuffworks. com/pc. htm q References n n Internet Effectively (Ch 1 -2) http: //computer. howstuffworks. com/pc. htm q n ~ 3 mins of video Motherboard q http: //en. wikipedia. org/wiki/Image: ASRock_K 7 VT 4 A_Pro_Mainboard_Labeled_English. png

Homework n Read RFC 2555 q n n ftp: //ftp. rfc-editor. org/in-notes/rfc 2555. txt Homework n Read RFC 2555 q n n ftp: //ftp. rfc-editor. org/in-notes/rfc 2555. txt List all the names of the people appeared in the RFC Submit the list via Moodle by next Wed (Oct 3) @ 23: 55 pm

Lab 1 n n Get your CS username and password Get familiar with Moodle Lab 1 n n Get your CS username and password Get familiar with Moodle q q q n n Update your profile Post a message to the forum Submit HW 1 Create a screendump Form a team q q 4 -5 members Pick a cool team name Pick a team leader Post your team info. to the “Form a Team” forum